Difference between revisions of "Datapoint 3300"
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| − | The | + | The '''DataPoint 3300''' was the first [[wikipedia:computer terminal|computer terminal]] manufactured by |
| − | | url=http://en.wikipedia.org/wiki/ | + | Computer Terminal Corporation, later renamed [[wikipedia:Datapoint|Datapoint]], announced in 1967<ref |
| − | | title=Wikipedia: Datapoint | + | name="TVT_History">[http://www.swtpc.com/mholley/History/TVT_History.htm ''The History of the TV Typewriter'', Michael Holley]</ref> |
| − | | accessdate=March | + | and shipping in 1969.<ref name="SanAntonio">{{cite web |
| + | | url=http://alanweinkrantz.typepad.com/alan_weinkrantz_and_compa/lamont-wood/ | ||
| + | | title=San Antonio Has Claim As The Birthplace of the Personal Computer. Read All About It. | ||
| + | | author=Alan Weinkrantz | ||
| + | | date=June 2, 2009 | ||
| + | | archive-url=https://web.archive.org/web/20140113040927/http://alanweinkrantz.typepad.com/alan_weinkrantz_and_compa/lamont-wood/ | ||
| + | | archive-date=January 13, 2014}}</ref><ref>{{cite web | ||
| + | | url=http://en.wikipedia.org/wiki/Datapoint_3300 | ||
| + | | title=Wikipedia: Datapoint 3300 | ||
| + | | accessdate=March 1, 2026 | ||
}}</ref>{{computerworld | }}</ref>{{computerworld | ||
| id=wPhFK56vXi8C | | id=wPhFK56vXi8C | ||
| Line 22: | Line 31: | ||
| date=February 6, 1978 | | date=February 6, 1978 | ||
}}{{ref handbook|124}} | }}{{ref handbook|124}} | ||
| + | Since this terminal was intended to replace a [[wikipedia:teleprinter|teleprinter]] | ||
| + | such as those made by [[wikipedia:Teletype Corporation|Teletype Corporation]] it was one of | ||
| + | the first ''glass TTYs'' (glass for the screen, TTY as the abbreviation | ||
| + | for "Teletype") ever produced. | ||
| − | + | As well as being sold under its own name, it was also sold as the [[DEC VT06]] | |
| + | and the [[HP 2600A]] (introduced in 1972).<ref | ||
| + | name="hp">[http://www.hpmuseum.net/display_item.php?hw=94 HP Computer Museum page on HP 2600A, access Dec 26, 2010]</ref> | ||
| + | |||
| + | == Details == | ||
| + | |||
| + | The Datapoint 3300 emulated a [[wikipedia:Teletype Corporation|Teletype]] | ||
| + | [[Teletype Model 33|Model 33]], but went beyond what a Teletype could achieve | ||
| + | with its paper output. It supported control codes to move the cursor up, down, | ||
| + | left and right, to the top left of the screen, or to the start of the bottom line. | ||
| + | The 3300 could also clear to the end of the current line, or clear to the end of the screen. | ||
| + | |||
| + | It did not, however, support direct cursor positioning. It also had 25 rows of | ||
| + | [[wikipedia:Characters per line|72 columns]] of upper-case characters, rather | ||
| + | than the 80 x 24 that would become more common in subsequent years. | ||
| + | |||
| + | == Hardware == | ||
| + | |||
| + | Like most terminals designed up until the mid-1970s, the Datapoint 3300 was | ||
| + | implemented using [[wikipedia:Transistor–transistor logic|TTL logic]] in a | ||
| + | typical mix of small-scale and medium-scale integrated circuits,<ref | ||
| + | name="maint">[http://bitsavers.org/pdf/datapoint/3300/70116_3300termMaint_Dec76.pdf | ||
| + | ''DataPoint 3300 Maintenance Manual'', December, 1976.]</ref> i.e. in a very | ||
| + | similar way to how many [[wikipedia:minicomputer|minicomputer]]s of the 1970/80s (such as | ||
| + | the [[wikipedia:Digital Equipment Corporation|Digital]] [[wikipedia:VAX-11|VAX-11]]) were | ||
| + | built. Later terminals (such as the [[DEC VT100]]) typically used a | ||
| + | [[wikipedia:microprocessor|microprocessor]] to implement large parts of the user interface and | ||
| + | general logic. | ||
| + | |||
| + | At the time of its introduction, RAM was expensive (it would not be until 1970 | ||
| + | that Intel released the [[wikipedia:Intel 1103|1103]], the first | ||
| + | [[wikipedia:Dynamic random-access memory|DRAM]] semiconductor memory chip making | ||
| + | RAM affordable). Thus, the terminal stored its display of 25 rows of 72 columns | ||
| + | of upper-case characters using fifty-four 200-bit [[wikipedia:shift register|shift register]]s, | ||
| + | arranged in six tracks of nine packs each, providing | ||
| + | [[wikipedia:Shift register#Shift register memory|shift register memory]] for 1800 | ||
| + | 6-bit characters.<ref name="maint"/> The shift-register design meant that scrolling | ||
| + | the terminal display could be accomplished by simply pausing the display output to | ||
| + | skip one line of characters. | ||
== [[Manx]] == | == [[Manx]] == | ||
* {{manx details|18,15761|Datapoint 3300/Maintenance}}, December 1976 | * {{manx details|18,15761|Datapoint 3300/Maintenance}}, December 1976 | ||
| + | |||
| + | ==See also== | ||
| + | * [[wikipedia:Datapoint 2200|Datapoint 2200]] | ||
| + | |||
| + | ==External links== | ||
| + | *[http://bitsavers.org/pdf/datapoint Datapoint documentation] on bitsavers.org | ||
| + | *[http://personal.terabites.com/ Page with links to a doctoral thesis about early microprocessor history, with lots of details about Datapoint's role, and a copy of the Datapoint 2200 Programmer's Guide (both in PDF format)] – both with a lot of historical detail. | ||
| + | *[https://web.archive.org/web/20061028002811/http://www.americanheritage.com/articles/magazine/it/1994/2/1994_2_64.shtml The man who invented the PC] | ||
| + | *[http://www.datapoint.org Unofficial Datapoint Organization WEB site] at datapoint.org | ||
{{References}} | {{References}} | ||
| Line 36: | Line 96: | ||
{{category raster}} | {{category raster}} | ||
[[Category:1969]] | [[Category:1969]] | ||
| + | {{stub}} | ||
Latest revision as of 04:13, 2 March 2026
| Datapoint 3300 | |
|---|---|
| Manufacturer | Datapoint |
| Model | 3300 |
| Lifetime | |
| Introduced | 1969 |
| Discontinued | 1977 |
| Communication | |
| Interface | RS-232C |
| Baud Rates | 110, 150, 220, 300, 440, 600, 880, 1200, 1760, 2400 |
| Display | |
| Size | 12-inch |
| Phosphor | P31 green |
| Refresh Rate | 60 Hz |
| Character Modes | |
| Resolution | 72x25 |
| Matrix | 5x7 |
The DataPoint 3300 was the first computer terminal manufactured by Computer Terminal Corporation, later renamed Datapoint, announced in 1967[1] and shipping in 1969.[2][3][4][5] Since this terminal was intended to replace a teleprinter such as those made by Teletype Corporation it was one of the first glass TTYs (glass for the screen, TTY as the abbreviation for "Teletype") ever produced.
As well as being sold under its own name, it was also sold as the DEC VT06 and the HP 2600A (introduced in 1972).[6]
Details
The Datapoint 3300 emulated a Teletype Model 33, but went beyond what a Teletype could achieve with its paper output. It supported control codes to move the cursor up, down, left and right, to the top left of the screen, or to the start of the bottom line. The 3300 could also clear to the end of the current line, or clear to the end of the screen.
It did not, however, support direct cursor positioning. It also had 25 rows of 72 columns of upper-case characters, rather than the 80 x 24 that would become more common in subsequent years.
Hardware
Like most terminals designed up until the mid-1970s, the Datapoint 3300 was implemented using TTL logic in a typical mix of small-scale and medium-scale integrated circuits,[7] i.e. in a very similar way to how many minicomputers of the 1970/80s (such as the Digital VAX-11) were built. Later terminals (such as the DEC VT100) typically used a microprocessor to implement large parts of the user interface and general logic.
At the time of its introduction, RAM was expensive (it would not be until 1970 that Intel released the 1103, the first DRAM semiconductor memory chip making RAM affordable). Thus, the terminal stored its display of 25 rows of 72 columns of upper-case characters using fifty-four 200-bit shift registers, arranged in six tracks of nine packs each, providing shift register memory for 1800 6-bit characters.[7] The shift-register design meant that scrolling the terminal display could be accomplished by simply pausing the display output to skip one line of characters.
Manx
- Datapoint 3300/Maintenance, December 1976
See also
External links
- Datapoint documentation on bitsavers.org
- Page with links to a doctoral thesis about early microprocessor history, with lots of details about Datapoint's role, and a copy of the Datapoint 2200 Programmer's Guide (both in PDF format) – both with a lot of historical detail.
- The man who invented the PC
- Unofficial Datapoint Organization WEB site at datapoint.org
References
- ↑ The History of the TV Typewriter, Michael Holley
- ↑ Alan Weinkrantz (June 2, 2009). "San Antonio Has Claim As The Birthplace of the Personal Computer. Read All About It.". http://alanweinkrantz.typepad.com/alan_weinkrantz_and_compa/lamont-wood/.
- ↑ "Wikipedia: Datapoint 3300". http://en.wikipedia.org/wiki/Datapoint_3300. Retrieved March 1, 2026.
- ↑ "Telecom Serving Datapoint Users", Computerworld, February 6, 1978, pg. 32
- ↑ Duane E. Sharp (1977). Handbook of Interactive Computer Terminals. p. 124. http://archive.org/details/handbookofintera00duan.
- ↑ HP Computer Museum page on HP 2600A, access Dec 26, 2010
- ↑ 7.0 7.1 [http://bitsavers.org/pdf/datapoint/3300/70116_3300termMaint_Dec76.pdf DataPoint 3300 Maintenance Manual, December, 1976.]
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