/*
 * Plugin Name: APCu Object Cache
 * Description: APCu backend for the WP Object Cache.
 * Based on Plugin named APCu Object Cache Backend
 * Plugin URI: https://wordpress.org/plugins/apcu/
 * Author: Pierre Schmitz
 * Author URI: https://pierre-schmitz.com/
 * Plugin URI: https://wordpress.org/plugins/apcu/
 *
 *
 * @Authors James Dugger, Jonathan Bardo
 * @copyright 2017 GoDaddy Inc. 14455 N. Hayden Road Scottsdale, Arizona
 */

$oc_logged_in = false;

foreach ( $_COOKIE as $k => $v ) {

	if ( preg_match( '/^comment_author|wordpress_logged_in_[a-f0-9]+|woocommerce_items_in_cart|PHPSESSID_|edd_wp_session|edd_items_in_cartcc_cart_key|ccm_token/', $k ) ) {

		$oc_logged_in = true;

		break;

	}

}

$oc_blocked_page = ( defined( 'WP_ADMIN' ) || defined( 'DOING_AJAX' ) || defined( 'XMLRPC_REQUEST' ) || 'wp-login.php' === basename( $_SERVER['SCRIPT_FILENAME'] ) );

function wpaas_is_using_apcu() {

	return version_compare( PHP_VERSION, '5.6.0', '>=' ) && function_exists( 'apcu_fetch' );

}


if ( 'cli' !== php_sapi_name() && ! $oc_logged_in && ! $oc_blocked_page && wpaas_is_using_apcu() ) :

	/**
	 * Save the transients to the DB.  The explanation is a bit too long
	 * for code.  The tl;dr of it is that we don't have a single 'fast cache'
	 * source yet (like memcached) and so some long lived items like transients
	 * are still best cached in the db and then brought back into APC
	 *
	 * @param string  $transient
	 * @param mixed   $value
	 * @param int     $expire
	 * @param boolean $site = false
	 *
	 * @return bool
	 */
	function wpaas_save_transient( $transient, $value, $expire, $site = false ) {
		global $wp_object_cache, $wpdb;

		// The 'special' transient option names
		$transient_timeout = ( $site ? '_site' : '' ) . '_transient_timeout_' . $transient;
		$transient         = ( $site ? '_site' : '' ) . '_transient_' . $transient;

		// Cap expiration at 24 hours to avoid littering the DB
		if ( $expire == 0 ) {
			$expire = 24 * 60 * 60;
		}

		// Save to object cache
		$wp_object_cache->set( $transient, $value, 'options', $expire );
		$wp_object_cache->set( $transient_timeout, time() + $expire, 'options', $expire );

		// Update alloptions
		$alloptions                       = $wp_object_cache->get( 'alloptions', 'options' );
		$alloptions[ $transient ]         = $value;
		$alloptions[ $transient_timeout ] = time() + $expire;
		$wp_object_cache->set( 'alloptions', $alloptions, 'options' );

		// Use the normal update option logic
		if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
			$flag = $wpdb->suppress_errors;
			$wpdb->suppress_errors( true );
			if ( $site && is_multisite() ) {
				$wpdb->query(
					$wpdb->prepare(
						"INSERT INTO `{$wpdb->sitemeta}` ( `option_name`, `option_value`, `autoload` ) VALUES ( %s, UNIX_TIMESTAMP( NOW() ) + %d, 'yes' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );",
						$transient_timeout,
						$expire
					)
				);
				$wpdb->query(
					$wpdb->prepare(
						"INSERT INTO `{$wpdb->sitemeta}` ( `option_name`, `option_value`, `autoload` ) VALUES ( %s, %s, 'no' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );",
						$transient,
						maybe_serialize( $value )
					)
				);
			} else {
				$wpdb->query(
					$wpdb->prepare(
						"INSERT INTO `{$wpdb->options}` (`option_name`, `option_value`, `autoload`) VALUES ( %s, UNIX_TIMESTAMP( NOW() ) + %d, 'yes' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );",
						$transient_timeout,
						$expire
					)
				);
				$wpdb->query(
					$wpdb->prepare(
						"INSERT INTO `{$wpdb->options}` (`option_name`, `option_value`, `autoload`) VALUES ( %s, %s, 'no' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );",
						$transient,
						maybe_serialize( $value )
					)
				);
			}
			$wpdb->suppress_errors( $flag );
		}

		return true;
	}

	function wpaas_prune_transients() {
		global $wpdb;

		if ( ! empty( $wpdb ) && $wpdb instanceof wpdb && function_exists( 'is_main_site' ) && function_exists( 'is_main_network' ) ) {

			$flag = $wpdb->suppress_errors;
			$wpdb->suppress_errors( true );

			// Lifted straight from schema.php

			// Deletes all expired transients.
			// The multi-table delete syntax is used to delete the transient record from table a,
			// and the corresponding transient_timeout record from table b.
			$time = time();
			$wpdb->query( "DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE
		a.option_name LIKE '\_transient\_%' AND
		a.option_name NOT LIKE '\_transient\_timeout\_%' AND
		b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) )
		AND b.option_value < $time" );

			if ( is_main_site() && is_main_network() ) {
				$wpdb->query( "DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE
		a.option_name LIKE '\_site\_transient\_%' AND
		a.option_name NOT LIKE '\_site\_transient\_timeout\_%' AND
		b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) )
		AND b.option_value < $time" );
			}


			$wpdb->suppress_errors( $flag );
		}
	}

	/**
	 * If another cache was flushed or updated, sync across all servers / processes using
	 * the database as the authority.  This uses the database as the authority for timestamps
	 * as well to avoid drift between servers.
	 * @return void
	 */
	function wpaas_init_sync_cache() {

		global $wpdb;

		if ( empty( $wpdb ) || ! ( $wpdb instanceof wpdb ) ) {

			return;

		}

		$flag = $wpdb->suppress_errors;
		$wpdb->suppress_errors( true );
		$result = $wpdb->get_results(
			"SELECT option_name, option_value FROM `{$wpdb->options}` WHERE option_name = 'gd_system_last_cache_flush' UNION SELECT 'current_time', UNIX_TIMESTAMP( NOW() ) AS option_value;",
			ARRAY_A
		);
		$wpdb->suppress_errors( $flag );

		if ( empty( $result ) ) {

			return;

		}

		$master_flush = false;

		foreach ( $result as $row ) {

			switch ( $row['option_name'] ) {

				case 'current_time' :
					$current_time = $row['option_value'];
					break;

				case 'gd_system_last_cache_flush' :
					$master_flush = $row['option_value'];
					break;

			}

		}

		$local_flush = wp_cache_get( 'gd_system_last_cache_flush' );

		if ( false === $local_flush || $local_flush < $master_flush ) {

			wp_cache_flush( true );

			wp_cache_set( 'gd_system_last_cache_flush', $current_time );

		}

	}

	/**
	 * Start default implementation of object cache
	 */

	if ( ! defined( 'WP_APC_KEY_SALT' ) ) {

		define( 'WP_APC_KEY_SALT', '' );

	}

	function wp_cache_add( $key, $data, $group = '', $expire = 0 ) {
		global $wp_object_cache;

		if ( 'transient' == $group ) {
			wpaas_save_transient( $key, $data, $expire );

			return $wp_object_cache->add( "_transient_$key", $data, 'options', $expire );
		} elseif ( 'site-transient' == $group ) {
			wpaas_save_transient( $key, $data, $expire, true );

			return $wp_object_cache->add( "_site_transient_$key", $data, 'site-options', $expire );
		} else {
			return $wp_object_cache->add( $key, $data, $group, $expire );
		}
	}

	function wp_cache_incr( $key, $n = 1, $group = '' ) {
		global $wp_object_cache;

		return $wp_object_cache->incr2( $key, $n, $group );
	}

	function wp_cache_decr( $key, $n = 1, $group = '' ) {
		global $wp_object_cache;

		return $wp_object_cache->decr( $key, $n, $group );
	}

	function wp_cache_close() {
		return true;
	}

	function wp_cache_delete( $key, $group = '' ) {
		global $wp_object_cache, $wpdb;

		if ( 'transient' == $group ) {
			if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
				$flag = $wpdb->suppress_errors;
				$wpdb->suppress_errors( true );
				$wpdb->query(
					$wpdb->prepare(
						"DELETE FROM `{$wpdb->prefix}options` WHERE option_name IN ( %s, %s );",
						"_transient_{$key}",
						"_transient_timeout_{$key}"
					)
				);
				$wpdb->suppress_errors( $flag );
			}

			$wp_object_cache->delete( "_transient_timeout_$key", 'options' );

			// Update alloptions
			$alloptions = $wp_object_cache->get( 'alloptions', 'options' );
			unset( $alloptions["_transient_$key"] );
			unset( $alloptions["_transient_timeout_$key"] );
			$wp_object_cache->set( 'alloptions', $alloptions, 'options' );

			return $wp_object_cache->delete( "_transient_$key", 'options' );
		} elseif ( 'site-transient' == $group ) {
			if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
				$table = $wpdb->options;
				if ( is_multisite() ) {
					$table = $wpdb->sitemeta;
				}
				$flag = $wpdb->suppress_errors;
				$wpdb->suppress_errors( true );
				$wpdb->query(
					$wpdb->prepare(
						"DELETE FROM `{$table}` WHERE option_name IN ( %s, %s );",
						"_transient_{$key}",
						"_transient_timeout_{$key}"
					)
				);
				$wpdb->suppress_errors( $flag );
			}
			$wp_object_cache->delete( "_transient_timeout_$key", 'site-options' );

			// Update alloptions
			$alloptions = $wp_object_cache->get( 'alloptions', 'options' );
			unset( $alloptions["_site_transient_$key"] );
			unset( $alloptions["_site_transient_timeout_$key"] );
			$wp_object_cache->set( 'alloptions', $alloptions, 'options' );

			return $wp_object_cache->delete( "_site_transient_$key", 'site-options' );
		}

		return $wp_object_cache->delete( $key, $group );
	}

	function wp_cache_flush( $local_flush = false ) {
		global $wp_object_cache, $wpdb;

		if ( ! $local_flush ) {
			if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
				$flag = $wpdb->suppress_errors;
				$wpdb->suppress_errors( true );
				$wpdb->query( "INSERT INTO `{$wpdb->options}` (`option_name`, `option_value`, `autoload`) VALUES ( 'gd_system_last_cache_flush', UNIX_TIMESTAMP( NOW() ), 'no' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );" );
				$wpdb->suppress_errors( $flag );
			}
		}

		return $wp_object_cache->flush();
	}

	function wp_cache_get( $key, $group = '', $force = false ) {
		global $wp_object_cache, $wpdb;

		if ( 'transient' == $group ) {
			$alloptions = $wp_object_cache->get( 'alloptions', 'options' );
			if ( isset( $alloptions["_transient_$key"] ) && isset( $alloptions["_transient_timeout_$key"] ) && $alloptions["_transient_timeout_$key"] > time() ) {
				return maybe_unserialize( $alloptions["_transient_$key"] );
			}
			$transient = $wp_object_cache->get( "_transient_$key", 'options', $force );
			$timeout   = $wp_object_cache->get( "_transient_timeout_$key", 'options', $force );
			if ( false !== $transient && ! empty( $timeout ) && $timeout > time() ) {
				return maybe_unserialize( $transient );
			}
			if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
				$flag = $wpdb->suppress_errors;
				$wpdb->suppress_errors( true );
				$result = $wpdb->get_results(
					$wpdb->prepare(
						"SELECT option_name, option_value FROM `{$wpdb->options}` WHERE option_name IN ( %s, %s ) UNION SELECT 'current_time', UNIX_TIMESTAMP( NOW() ) AS option_value;",
						"_transient_{$key}",
						"_transient_timeout_{$key}"
					),
					ARRAY_A
				);
				$wpdb->suppress_errors( $flag );
				if ( ! empty( $result ) ) {
					$transient    = false;
					$timeout      = false;
					$current_time = time();
					foreach ( $result as $row ) {
						switch ( $row['option_name'] ) {
							case "_transient_$key" :
								$transient = $row['option_value'];
								break;
							case "_transient_timeout_$key" :
								$timeout = $row['option_value'];
								break;
							case 'current_time' :
								$current_time = $row['option_value'];
								break;
						}
					}
					if ( false !== $transient && ! empty( $timeout ) && $timeout > $current_time ) {
						return maybe_unserialize( $transient );
					}
				}
			}

			return false;
		} elseif ( 'site-transient' == $group ) {
			$transient = $wp_object_cache->get( "_site_transient_$key", 'options', $force );
			$timeout   = $wp_object_cache->get( "_site_transient_timeout_$key", 'options', $force );
			if ( false !== $transient && ! empty( $timeout ) && $timeout > time() ) {
				return maybe_unserialize( $transient );
			}
			if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) {
				$table = $wpdb->options;
				if ( is_multisite() ) {
					$table = $wpdb->sitemeta;
				}
				$flag = $wpdb->suppress_errors;
				$wpdb->suppress_errors( true );
				$result = $wpdb->get_results(
					$wpdb->prepare(
						"SELECT option_name, option_value FROM `{$table}` WHERE option_name IN ( %s, %s ) UNION SELECT 'current_time', UNIX_TIMESTAMP( NOW() ) AS option_value;",
						"_site_transient_{$key}",
						"_site_transient_timeout_{$key}"
					),
					ARRAY_A
				);
				$wpdb->suppress_errors( $flag );
				if ( ! empty( $result ) ) {
					$transient    = false;
					$timeout      = false;
					$current_time = time();
					foreach ( $result as $row ) {
						switch ( $row['option_name'] ) {
							case "_site_transient_$key" :
								$transient = $row['option_value'];
								break;
							case "_site_transient_timeout_$key" :
								$timeout = $row['option_value'];
								break;
							case 'current_time' :
								$current_time = $row['option_value'];
								break;
						}
					}
					if ( false !== $transient && ! empty( $timeout ) && $timeout > $current_time ) {
						return maybe_unserialize( $transient );
					}
				}
			}

			return false;
		} else {
			return $wp_object_cache->get( $key, $group, $force );
		}
	}

	function wp_cache_init() {
		global $wp_object_cache;

		if ( mt_rand( 1, 100 ) == 42 ) {

			wpaas_prune_transients();

		}

		add_action( 'muplugins_loaded', 'wpaas_init_sync_cache' );

		$wp_object_cache = new APCu_Object_Cache();

	}

	function wp_cache_replace( $key, $data, $group = '', $expire = 0 ) {
		global $wp_object_cache;

		return $wp_object_cache->replace( $key, $data, $group, $expire );
	}

	function wp_cache_set( $key, $data, $group = '', $expire = 0 ) {
		global $wp_object_cache;

		if ( defined( 'WP_INSTALLING' ) == false ) {
			if ( 'transient' == $group ) {
				return wpaas_save_transient( $key, $data, $expire );
			} elseif ( 'site-transient' == $group ) {
				return wpaas_save_transient( $key, $data, $expire, true );
			} else {
				return $wp_object_cache->set( $key, $data, $group, $expire );
			}
		} else {
			return $wp_object_cache->delete( $key, $group );
		}
	}

	function wp_cache_switch_to_blog( $blog_id ) {
		global $wp_object_cache;

		return $wp_object_cache->switch_to_blog( $blog_id );
	}

	function wp_cache_add_global_groups( $groups ) {
		global $wp_object_cache;

		$wp_object_cache->add_global_groups( $groups );
	}

	function wp_cache_add_non_persistent_groups( $groups ) {
		global $wp_object_cache;

		$wp_object_cache->add_non_persistent_groups( $groups );
	}

	class GD_APCu_Object_Cache {

		private $prefix = '';
		private $local_cache = array();
		private $global_groups = array();
		private $non_persistent_groups = array();
		private $multisite = false;
		private $blog_prefix = '';

		public function __construct() {
			global $table_prefix;

			$this->multisite   = is_multisite();
			$this->blog_prefix = $this->multisite ? get_current_blog_id() . ':' : '';
			$this->prefix      = DB_HOST . '.' . DB_NAME . '.' . $table_prefix;
		}

		private function get_group( $group ) {
			return empty( $group ) ? 'default' : $group;
		}

		private function get_key( $group, $key ) {
			if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
				return $this->prefix . '.' . $group . '.' . $this->blog_prefix . ':' . $key;
			} else {
				return $this->prefix . '.' . $group . '.' . $key;
			}
		}

		public function add( $key, $data, $group = 'default', $expire = 0 ) {
			$group = $this->get_group( $group );
			$key   = $this->get_key( $group, $key );

			if ( function_exists( 'wp_suspend_cache_addition' ) && wp_suspend_cache_addition() ) {
				return false;
			}
			if ( isset( $this->local_cache[ $group ][ $key ] ) ) {
				return false;
			}
			// FIXME: Somehow apcu_add does not return false if key already exists
			if ( ! isset( $this->non_persistent_groups[ $group ] ) && apcu_exists( $key ) ) {
				return false;
			}

			if ( is_object( $data ) ) {
				$this->local_cache[ $group ][ $key ] = clone $data;
			} else {
				$this->local_cache[ $group ][ $key ] = $data;
			}

			if ( ! isset( $this->non_persistent_groups[ $group ] ) ) {
				return apcu_add( $key, $data, (int) $expire );
			}

			return true;
		}

		public function add_global_groups( $groups ) {
			if ( is_array( $groups ) ) {
				foreach ( $groups as $group ) {
					$this->global_groups[ $group ] = true;
				}
			} else {
				$this->global_groups[ $groups ] = true;
			}
		}

		public function add_non_persistent_groups( $groups ) {
			if ( is_array( $groups ) ) {
				foreach ( $groups as $group ) {
					$this->non_persistent_groups[ $group ] = true;
				}
			} else {
				$this->non_persistent_groups[ $groups ] = true;
			}
		}

		public function decr( $key, $offset = 1, $group = 'default' ) {
			if ( $offset < 0 ) {
				return $this->incr( $key, abs( $offset ), $group );
			}

			$group = $this->get_group( $group );
			$key   = $this->get_key( $group, $key );

			if ( isset( $this->local_cache[ $group ][ $key ] ) && $this->local_cache[ $group ][ $key ] - $offset >= 0 ) {
				$this->local_cache[ $group ][ $key ] -= $offset;
			} else {
				$this->local_cache[ $group ][ $key ] = 0;
			}

			if ( isset( $this->non_persistent_groups[ $group ] ) ) {
				return $this->local_cache[ $group ][ $key ];
			} else {
				$value = apcu_dec( $key, $offset );
				if ( $value < 0 ) {
					apcu_store( $key, 0 );

					return 0;
				}

				return $value;
			}
		}

		public function delete( $key, $group = 'default', $force = false ) {
			$group = $this->get_group( $group );
			$key   = $this->get_key( $group, $key );

			unset( $this->local_cache[ $group ][ $key ] );
			if ( ! isset( $this->non_persistent_groups[ $group ] ) ) {
				return apcu_delete( $key );
			}

			return true;
		}

		public function flush() {
			$this->local_cache = array();
			// TODO: only clear our own entries
			apcu_clear_cache();

			return true;
		}

		public function get( $key, $group = 'default', $force = false, &$found = null ) {
			$group = $this->get_group( $group );
			$key   = $this->get_key( $group, $key );

			if ( ! $force && isset( $this->local_cache[ $group ][ $key ] ) ) {
				$found = true;
				if ( is_object( $this->local_cache[ $group ][ $key ] ) ) {
					return clone $this->local_cache[ $group ][ $key ];
				} else {
					return $this->local_cache[ $group ][ $key ];
				}
			} elseif ( isset( $this->non_persistent_groups[ $group ] ) ) {
				$found = false;

				return false;
			} else {
				$value = @apcu_fetch( $key, $found );
				if ( $found ) {
					if ( $force ) {
						$this->local_cache[ $group ][ $key ] = $value;
					}

					return $value;
				} else {
					return false;
				}
			}
		}

		public function incr2( $key, $offset = 1, $group = 'default' ) {
			if ( $offset < 0 ) {
				return $this->decr( $key, abs( $offset ), $group );
			}

			$group = $this->get_group( $group );
			$key   = $this->get_key( $group, $key );

			if ( isset( $this->local_cache[ $group ][ $key ] ) && $this->local_cache[ $group ][ $key ] + $offset >= 0 ) {
				$this->local_cache[ $group ][ $key ] += $offset;
			} else {
				$this->local_cache[ $group ][ $key ] = 0;
			}

			if ( isset( $this->non_persistent_groups[ $group ] ) ) {
				return $this->local_cache[ $group ][ $key ];
			} else if ( function_exists( 'apcu_inc' ) ) {
				$value = apcu_inc( $key, $offset );
				if ( $value < 0 ) {
					apcu_store( $key, 0 );

					return 0;
				}

				return $value;
			}

			return false;
		}

		public function replace( $key, $data, $group = 'default', $expire = 0 ) {
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{"id":4702,"date":"2020-08-19T21:01:50","date_gmt":"2020-08-19T19:01:50","guid":{"rendered":"https:\/\/oldpics.net\/?p=4702"},"modified":"2020-08-19T21:01:52","modified_gmt":"2020-08-19T19:01:52","slug":"four-kashio-brothers-with-the-first-casio-calculator-1957","status":"publish","type":"post","link":"https:\/\/oldpics.net\/four-kashio-brothers-with-the-first-casio-calculator-1957\/","title":{"rendered":"Four Kashio brothers with the first Casio calculator, 1957"},"content":{"rendered":"\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-4703\" src=\"https:\/\/oldpics.net\/wp-content\/uploads\/2020\/08\/Four-Kashio-brothers-with-the-first-Casio-calculator.jpg\" alt=\"Four Kashio brothers with the first Casio calculator\" width=\"1100\" height=\"730\" srcset=\"https:\/\/oldpics.net\/wp-content\/uploads\/2020\/08\/Four-Kashio-brothers-with-the-first-Casio-calculator.jpg 1100w, https:\/\/oldpics.net\/wp-content\/uploads\/2020\/08\/Four-Kashio-brothers-with-the-first-Casio-calculator-300x199.jpg 300w, https:\/\/oldpics.net\/wp-content\/uploads\/2020\/08\/Four-Kashio-brothers-with-the-first-Casio-calculator-1024x680.jpg 1024w, https:\/\/oldpics.net\/wp-content\/uploads\/2020\/08\/Four-Kashio-brothers-with-the-first-Casio-calculator-768x510.jpg 768w, https:\/\/oldpics.net\/wp-content\/uploads\/2020\/08\/Four-Kashio-brothers-with-the-first-Casio-calculator-360x239.jpg 360w\" sizes=\"(max-width: 1100px) 100vw, 1100px\" \/>The history of the Tokyo-based Casio Computer Co began in 1946, right after the<a href=\"https:\/\/oldpics.net\/the-story-v-j-day-in-times-square-by-alfred-eisenstaedt\/\"> end of WWII<\/a>. Four brothers &#8211; Toshio Kashio, Kazuo Kashio, Tadao Kashio, and Yukio Kashio &#8211; accumulated some start-up capital for their venture, which got name Casio. They got it unusually &#8211; by making and selling cigarette holders. Those devices were helped to smoke the small remains of the cigarette, which people nowadays dispose of. It had a great value in poor post-war Japan.<\/span><\/p>\n<h3>From cigarettes to hi-tech<\/h3>\n<p><span style=\"font-weight: 400;\">Kashio brothers named their first high-tech development &#8220;Casio. Model 14-A&#8221;. It was an electronic calculator built on a system of solenoid relays. Of course, it could not be small. In the photo, the push-button terminals are visible; also, there was a kind of a system unit. Overall, this device weighed 140 kg. But it was a massive achievement during the lamp devices era. People called a device of Kashio brothers a micro-calculator.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The Model 14-A introduced an innovative 10-key digital input and one operation display instead of three. Both arguments and the final result were now displayed on one screen. Nobody did it before the Kashio brothers.<\/span><\/p>\n<h3>When Kashio brothers created Casio company<\/h3>\n<p><span style=\"font-weight: 400;\">Subsequently, the Casio company became famous for its quartz watches, electronic musical instruments, the first digital cameras with a liquid crystal display. Almost all of these exist to this day.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The company emblem is a design that encompasses and highlights the Casio trademark with a circle of four Ks, the initial letter in Kashio. The emblem symbolizes the strong ties among the four Casio brothers that founded and developed their calculator business. Toshio Kashio, the inventor of the Casio calculator, designed the emblem himself to embody their approach to the business.<\/span><\/p>\n<p>Kashio brothers put Japan on the map of the modern world. One might even say on the map of the world of the future.<\/p>\n<p><br \/><br \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The history of the Tokyo-based Casio Computer Co began in 1946, right after the end of WWII. Four brothers &#8211; Toshio Kashio,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":4703,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[51,72],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Four Kashio brothers with the first Casio calculator, 1957 - Old Pictures<\/title>\n<meta name=\"description\" content=\"A historical picture of four Kashio brothers together with the very first Casio device: a micro-calculator, 1957.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/oldpics.net\/four-kashio-brothers-with-the-first-casio-calculator-1957\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Four Kashio brothers with the first Casio calculator, 1957 - Old Pictures\" \/>\n<meta property=\"og:description\" content=\"A historical picture of four Kashio brothers together with the very first Casio device: a micro-calculator, 1957.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/oldpics.net\/four-kashio-brothers-with-the-first-casio-calculator-1957\/\" \/>\n<meta property=\"og:site_name\" content=\"Old Pictures\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/oldpics.net\/\" \/>\n<meta property=\"article:published_time\" content=\"2020-08-19T19:01:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-08-19T19:01:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/oldpics.net\/wp-content\/uploads\/2020\/08\/Four-Kashio-brothers-with-the-first-Casio-calculator.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1100\" \/>\n\t<meta property=\"og:image:height\" content=\"730\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Andrew Piper\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/oldpics.net\/#website\",\"url\":\"https:\/\/oldpics.net\/\",\"name\":\"Old Pictures\",\"description\":\"Historical photos, stories and even more\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/oldpics.net\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/oldpics.net\/four-kashio-brothers-with-the-first-casio-calculator-1957\/#primaryimage\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/oldpics.net\/wp-content\/uploads\/2020\/08\/Four-Kashio-brothers-with-the-first-Casio-calculator.jpg\",\"contentUrl\":\"https:\/\/oldpics.net\/wp-content\/uploads\/2020\/08\/Four-Kashio-brothers-with-the-first-Casio-calculator.jpg\",\"width\":1100,\"height\":730,\"caption\":\"Four Kashio brothers with the first Casio calculator\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/oldpics.net\/four-kashio-brothers-with-the-first-casio-calculator-1957\/#webpage\",\"url\":\"https:\/\/oldpics.net\/four-kashio-brothers-with-the-first-casio-calculator-1957\/\",\"name\":\"Four Kashio brothers with the first Casio calculator, 1957 - 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