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Early user terminals connected to computers were, like the Flexowriter, electromechanical [[teleprinter]]s/teletypewriters (TeleTYpewriter, TTY), such as the [[Teletype Model 33]], originally used for [[telegraphy]]; early Teletypes were typically configured as [[Teletype Corporation#KSR|Keyboard Send-Receive]] (KSR) or [[Teletype Corporation#ASR|Automatic Send-Receive]] (ASR). Some terminals, such as the ASR Teletype models, included a [[paper tape]] reader and punch which could record output such as a program listing. The data on the tape could be re-entered into the computer using the tape reader on the teletype, or printed to paper. Teletypes used the [[Digital current loop interface|current loop]] interface that was already used in telegraphy. A less expensive [[Teletype Corporation#RO|Read Only]] (RO) configuaration was available for the Teletype.
Custom-designs keyboard/printer terminals that came later included the [[IBM 2741]] (1965)<ref>{{cite web |url=https://www.ibm.com/ibm/history/exhibits/dpd50/dpd50_chronology3.html |title=DPD chronology |website=[[IBM]] |date=January 23, 2003 |quote=1965 ... IBM 2741 ... July 8.}}</ref> and the [[DECwriter]] (1970).<ref name=Phil.DECw36>{{cite web |url=https://biztechmagazine.com/article/2017/03/dec-la36-dot-matrix-printer-made-business-printing-faster-and-more-efficient |title=The DEC LA36 Dot Matrix Printer Made Business Printing Faster and more efficient |date=March 17, 2017 |quote=[[Digital Equipment Corporation]] .. debuted the DECwriter LA30 in 1970. |first=Phil |last=Goldstein}}</ref> Respective top speeds of teletypes, IBM 2741 and the LA30 (an early DECwriter) were 10, 15 and 30
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