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key punch unit

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  • Key punch — A key punch is a device for entering data into punched cards by precisely punching holes at locations designated by the keys struck by the operator. Early keypunches were manual devices. Later keypunches were mechanized, often resembled a small… …   Wikipedia

  • Unit record equipment — Before the advent of electronic computers, data processing was performed using electromechanical devices called unit record equipment, electric accounting machines (EAM) or tabulating machines. Unit record machines were as ubiquitous in industry… …   Wikipedia

  • 1A2 Key System — The 1A2 Key System is an analog multiline business key telephone system. Unlike more modern multiline systems, every telephone line serving a particular phone is wired into that phone, and electromechanical switches (the keys ) switch the lines… …   Wikipedia

  • Follicular unit transplantation — is a modern hair restoration technique where the hair is transplanted in groups of 1 4 hairs – exactly as it grows in nature. It is a major advance over the older hair transplantation procedures that used larger grafts and often produced a pluggy …   Wikipedia

  • History of computing hardware — Computing hardware is a platform for information processing (block diagram) The history of computing hardware is the record of the ongoing effort to make computer hardware faster, cheaper, and capable of storing more data. Computing hardware… …   Wikipedia

  • List of IBM products — The following is a list of notable products from the International Business Machines (IBM) Corporation and its predecessor corporations, beginning in the 1890s, and spanning punched card machinery, time clocks, and typewriters, via mainframe… …   Wikipedia

  • Computer keyboard — A key being pressed on a computer keyboard. In computing, a keyboard is a typewriter style keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches. Following the decline of punch cards and paper… …   Wikipedia

  • IBM 519 — The IBM 519 Electric Document Originating Machine, introduced in 1946, was the last in a series of unit record machines designed for automated production of punch cards. It could reproduce all or parts of the information on a set of cards; copy… …   Wikipedia

  • CDC 6000 series — The CDC 6000 series was a family of mainframe computers manufactured by Control Data Corporation in the 1960s. It consisted of CDC 6400, CDC 6500, CDC 6600 and CDC 6700 computers, which all were extremely rapid and efficient for their time. Each… …   Wikipedia

  • IBM Product Test — was a group level organization for testing of IBM hardware and software products as part of the product development (i.e. not manufacturing ) process. It was housed in a number of laboratories associated with the various manufacturing and… …   Wikipedia

  • List of City College of New York people — Here follows a list of notable alumni and faculty of the City College of New York.Nobel laureates*Julius Axelrod 1933 1970 Nobel laureate in Medicine *Kenneth Arrow 1940 1972 Nobel laureate in Economics *Robert J. Aumann 1950 2005 Nobel laureate… …   Wikipedia

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