IBM F20-0074 An Introduction to IBM Punched Card Data Processing free download

File name F20-0074_An_Introduction_to_IBM_Punched_Card_Data_Processing.pdf

General Information Manual An Introduction to IBM Punched Card Data Processing Contents Fundamentals of IBM Accounting ... 2 The IBM Card ... 3 Coding Data ... 5 Punching and Verifying Data ... 6 Principles of IBM Machine Processing ... ... 9 Sorting Data ... ... ... ... ... ... ... ... ... ... ... ... 10 The Accounting Machine ... 12 The Control Panel ... 16 Accounting Controls ... 17 Other Punched Card Machines ... 18 The Use of Prepunched Data ... 20 Glossary ... 20 An Introduction to IBM Punched Card Data Processing For almost three quarters of a century the punched of recording the census data crosswise on a long strip card has been utilized to solve record-keeping problems. of paper. The facts were recorded by punching holes Since the first governmental application of punched in the strip in a planned pattern so that each hole in cards, their use has extended into virtually every type a specific location meant a specific thing. A special ma- of commercial and scientific enterprise. The develop- chine was able to examine the holes and electrically ment of the cards, and the machines to process them, perform the tabulation as the long strip was passed over began as the result of a specific need. Demands from a sensing device. For ease of handling and for dura- government, science and industry have brought about bility the paper strips soon were replaced by cards of today's IBM punched card data processing machines and a standard size and shape. Each card was used to record large electronic computers. They are called data process- the facts about an individual or a family - a unit situ- ing mac