Teletype ASR 33
Photo 1: Joe Mabel, CC BY-SA 3.0, via Wikimedia Commons (LCM - 1960s Teletype computer printer 01.jpg) Photo 2: Rama & Musée Bolo, CC BY-SA 2.0 fr, via Wikimedia Commons (Teletype-IMG 7287.jpg) Photo 3: Marcin Wichary, User:AlanM1, CC BY 2.0, via Wikimedia Commons (TTY33ASR.jpg)
Teleprinter, 1963, Teletype Corporation. The Model 33 ASR (Automatic Send and Receive) is the teletype that became the standard terminal of the first minicomputers and timesharing systems, and later of the first microcomputers: it prints at 10 characters per second on a paper roll, has a punched paper tape reader and punch for storing programs, and communicates through a 20 mA current loop or RS-232 at 110 baud. It was one of the first devices to use the ASCII code, and its keyboard with the CTRL key, BREAK, and the "here is" answerback influenced computer keyboards for decades.
| Years | 1963 to 1981 |
|---|---|
| Speed | 110 baud, 10 characters per second |
| Printing | type cylinder on a paper roll, upper case only |
| Paper tape | 8-level reader and punch (ASR version) |
| Interface | 20 mA current loop or RS-232 |
| Weight | about 25 kg |
| Price (1960s) | about US$700 |
Documentation
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