indicate incorrect information. Complete and rapid detection of errors is performed mechanically by the Automatic Verifying Machine The UNIVAC 1710 Verifying Interpreting Punch was introduced in 1969. Keypunch as a verb Saying that something would be keypunched (to keypunch as a verb), now that the actual device called a keypunch has become obsolete, refers to data entry. This use of the verb has replaced the former process, described as "When a key is struck on a keypunch, it prints the character on the top of the card but also punches a series of holes that the computer" can interpret." Transition to direct data entry In the 1950s, Remington Rand introduced the UNITYPER, which enabled data entry directly to magnetic tape for UNIVAC systems. Mohawk Data Sciences subsequently produced an improved magnetic tape encoder in 1965, which was somewhat successfully marketed as a keypunch replacement. In the mid-1970s, the rise of microprocessors and inexpensive computer terminals led to the development of additional key-to-tape and key-to-disk systems from smaller companies such as Inforex and Pertec. Punched cards were still commonly used for data entry and programming until the mid-1980s. However, eliminating the step of transferring punched cards to tape or disk (with the added benefit of saving the cost of the cards themselves) allowed for improved checking and correction during the data entry process. The development of video display terminals, interactive timeshared systems and, later, personal computers allowed workers who originated the data to enter it directly instead of writing it on forms to be entered by data entry clerks. See also Punched card Punched card input/output Hollerith code Unit record equipment Computer programming in the punched card era List of IBM products Chad (paper) References Further reading Columbia University Computing History: IBM Key Punches External links Columbia University Computing History: IBM Keypunches IBM Archives: IBM 029 — Card Punch IBM Archives: Working for the railroad (001 keypunch) IBM Punched Card Accounting Machines (1955) American inventions Punched card IBM keypunches UNIVAC unit record equipment Unit record equipment