Tag Archive | Punched cards

IBM System 3: Predecessor of the Modern Server

Pedro Trebbau Lopez The IBM System/3, introduced in 1969 and discontinued in 1985, was a cheap IBM computer for office tasks aimed at new customers or organizations that still maintained computers or IBM accounting machines of the 1400 Series. It was the first member of the family that IBM called Midrange. These computers are known […]

Punched Cards

Pedro Trebbau Lopez The punched cards is made ​​of cardboard sheet containing information in the form of perforations in a binary code. These were the first methods used to enter data and instructions into a computer in the 1960s and 1970s. Punch cards were used previously by Joseph Marie Jacquard  in his invention, the automated […]