Punched card input/output

（重定向自Card punch）

An IBM 650 computer, introduced in 1953, came with the IBM 533 Card Reader/Punch, right. At many IBM 650 installations, punched cards were the only input and output medium.

IBM 711 card reader on an IBM 704 computer at NASA in 1957

The popular IBM 1401, introduced in 1959 featured a fast card reader/punch, the IBM 1402, left and a fast line printer, the IBM 1403, right

IBM 711 card readers, far left and foreground, attached to dual IBM 7090s at NASA Mission Control in 1962.

A computer punched card reader or just computer card reader is a computer input device used to read executable computer programs and data from punched cards under computer control. A computer card punch is a computer output device that punches holes in cards under computer control. Sometimes computer card readers were combined with computer card punches and, later, other devices to form multifunction machines.

单词	Card punch
释义	Card punch 原声例句科技 Crash Course INTRO The earliest computer storage was paper punch cards, and its close cousin, punched paper tape. INTRO 最早的计算机存储是纸质穿孔卡，它的近亲是穿孔纸带。科技 Crash Course Its main control program was stored on a whopping 62,500 punch cards, which is equivalent to roughly 5 megabytes of data. 它的主要控制程序存储在高达 62,500 张打孔卡上，相当于大约 5 兆字节的数据。英语百科 Punched card input/output （重定向自Card punch） A computer punched card reader or just computer card reader is a computer input device used to read executable computer programs and data from punched cards under computer control. A computer card punch is a computer output device that punches holes in cards under computer control. Sometimes computer card readers were combined with computer card punches and, later, other devices to form multifunction machines.
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