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.
The next patent issued for a typewriter was granted to the American inventor William Austin Burt in 1829 for a machine with type arranged on a semicircular wheel that was revolved to the desired letter, then pressed against the paper.
Typebars of early commercial typewriters struck the paper at the bottom of the platen; the line being written was thus not visible to the operator.
In this typewriter all the typefaces were mounted on the outside of a single small cylinder that was revolved and moved up and down by the action of the keys to place the proper letter in the typing space.
The IBMElectrictypewriters were a series of electrictypewriters that IBM manufactured, starting in the late 1940s.
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.
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