IBM 2741 Communications Terminal



IBM 2741 APL variant<sup>1</sup>
IBM 2741 APL variant1

The IBM 2741 was a Selectric typewriter based printer-keyboard released in 19652 for use with IBM System/360 computers. It was a remote I/O terminal that provided direct access to the computer via a multiplexor and was ideally suited for text handling, online computation and programming applications3. It was a half-duplex terminal that could communicate at 134.5 bits per second. Due to being a Selectric-based device, the "golf ball" print element could be replaced with ones that had APL legends4.



  1. Oscar.nierstrasz - File:IBM2741.JPG [accessed 2021-07-22]. License: CC BY-SA 4.0.
  2. IBM - DPD chronology - 1965 [accessed 2021-07-22].
  3. IBM - IBM 2741 Communications Terminal Systems Reference Library [accessed 2021-07-22].
  4. Columbia University - The IBM 2741 Terminal [accessed 2021-07-22].