Before revision: It was introduced in 1976 , Coleco becoming the first customer having been introduced to the IC development by Ralph H. URL The Coleco Telstar story A minimum number of external components were needed to build a complete system.
After revision: some ICs exist with a 1974 (7436) date codeIt was introduced in 1976 , Coleco becoming the first customer having been introduced to the IC development by Ralph H. URL The Coleco Telstar story A minimum number of external components were needed to build a complete system.