The ADM-3A was an influential early video display terminal, introduced in 1976. [1] It was manufactured by Lear Siegler and had a 12-inch screen displaying 12 or 24 lines of 80 characters. It set a new industry low single unit price of $995.

2024年2月4日 · I have a few ADM-3A terminals in various states of repair; this Web page discusses repairs and issues of shipping. I also discuss other ADM brand terminals. Some of these terminals I'll retain for parts, so parts may be available from me.

There are numerous applications of the ADM 3A, all involving the transfer of asynchronous data. In some applications, data transfer may be exclusively unidirectional; either from the ADM 8A to a host computer, or from the computer to the ADM 3A. However, a more frequent application of the ADM 3A is one in which an operator

2020年6月2日 · The Lear Siegler ADM-3A terminal is an expanded version of the ADM-3 terminal. It was introduced in July, 1976 at a price of $1045. The ADM-3A added direct cursor addressing. By 1981, the price had been reduced to $595. A graphics option was available in May, 1982 at a price of $1,050.

2024年2月4日 · The [dead video] problem [on the 10th Anniversary ADM-3A] was a failure on the [Samsung monitor video] board. Traced the pc board with no schematic to a open winding in the flyback transformer causing a loss of the +34v DC collector voltage to …

View and Download Lear Siegler ADM 3A user's reference manual online. Dumb Terminal, Video Display Terminal. ADM 3A touch terminals pdf manual download.

2023年8月17日 · [David] at Usagi Electric ended up with an old Lear Siegler ADM-3A terminal in a trade a couple of years ago. But the CRT face was plagued with so-called cataracts, and the condition of the...

Title: ADM-3A Operator's Manual Author: Lear Siegler, Inc. Keywords: LSI text terminal Created Date: 12/23/2003 7:13:53 PM

The Lear Siegler ADM-3A was a very popular early video terminal; its low price (US$955), compared to its competitors, made it a common choice. The "ADM" part of the name reputedly stood for 'American Dream Machine'.

2016年7月14日 · The ADM-3A was a dumb terminal, similar in concept to the DEC VT52 launched the previous year, and following on from the almost identical looking ADM-3 also from 1975. A simple device comprising pretty much of just a keyboard, screen and communications ports, it would plug into a contemporary computer which could range from a multi million ...