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The IBM Magnetic Tape Selectric Composer
The IBM Magnetic Tape Selectric Composer (MT/SC)
The MT/SR typewriterUnlike the output station (see below) and later IBM Mag Card units, you can easily disconnect the magnetic tape console from the typewriter by unscrewing a connector. The small power supply and electronics cage explains why the tape console appears mostly empty if you peek inside. We should note that, while the system is write-to-tape-only, there is a limited way to edit with the “Backspace” key: while this would not erase on paper (the IBM Selectric II was not released yet), doing so would back up the tape by one character.
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