IBM Executive series typewriter - Definition

The IBM Electric typewriters were a series of electric typewriters that IBM manufactured, starting in the late 1940s. They used the conventional moving carriage and hammer mechanism. Each model came in both Standard and Executive versions; the Executive differed in having a multiple escapement mechanism and four widths for letters, producing a near typeset quality result.

Modified Standard versions of the A, B, and C models were commonly used as "console typewriters" or terminals on many early computers (e.g., JOHNNIAC, IBM 1620, PDP-1). Following the introduction of the IBM Selectric typewriter in 1961, which was much easier to interface to a computer, these typewriters were rarely used anymore as "console typewriters" or terminals.

External links

• The IBM Model B typewriter (http://www-03.ibm.com/ibm/history/exhibits/modelb/modelb_intro.html)
• Model 01 IBM typewriter - actual advertisements (http://www.etypewriters.com/01thumb.htm)
• Model A IBM typewriter - actual advertisements (http://www.etypewriters.com/a-thumb.htm)
• Model B IBM typewriter - actual advertisements (http://www.etypewriters.com/b-thumb.htm)
• Model C IBM typewriter - actual advertisements (http://www.etypewriters.com/c-thumb.htm)
• Model D IBM Standard typewriter - actual advertisement (http://www.etypewriters.com/d-std.jpg)
• Model D IBM Executive typewriter - actual advertisement (http://www.etypewriters.com/d-exec.jpg)
• IBM corporate history, 1885-1969 (http://www-1.ibm.com/ibm/history/documents/pdf/1885-1969.pdf) (PDF)