Originally, the word computing was synonymous with counting and calculating, and a computer was a person who computes. Since the advent of the electronic computer, it has come to also mean the operation and usage of these machines, the electrical processes carried out within the computer hardware itself, and the theoretical concepts governing them ( computer science).
Unit record equipmentBefore the advent of electronic computers, data processing was performed using electromechanical devices called unit record equipment ''electric accounting machines (EAM or tabulating machines. A data processing shop would have at least one of most of the
IBM 700/7000 seriesThe IBM 700/7000 series was a series of incompatible large scale ( mainframe) computer systems made by IBM through the 1950s and early 1960s. The 700's were all made obsolete by the introduction of the 7000s. The 7000s, in turn, were eventually replaced b
IBM 1400 seriesThe IBM 1400 series was a family of mid-range buisiness computers that IBM sold in the early 1960s as a replacement for unit record equipment. 1400 machines stored information in magnetic cores as variable length character strings terminated by a special
System/360The IBM System/360 S/360 is a computer system family announced by International Business Machines on April 7 1964. It was the first family of computers making a clear distinction between architecture and implementation. The chief architect of the S/360 wa
Early IBM disk storageMagnetic disk storage was a critical component of the computer revolution. IBM was a pioneer in this area. This article surveys the major IBM computer disk drives introduced in the 1950s, 1960s and early 1970s. The basic mechanical arrangement of hard dis
5 Business computing
Accounting softwareAccounting software is computer software that records and processes accounting transactions such as accounts payable, accounts receivable, payroll and trial balance. It may be developed inhouse by the company or organization using it, may be purchased fro
