Elektor Junior Computer: Difference between revisions
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{{Short description|1980s kit computer from Elektor magazine}} |
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[[File:Elektor JuniorComputer EPS80089-1 junior2 20.jpg|thumb|Junior-Computer]] |
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{{Infobox information appliance |
{{Infobox information appliance |
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| name = Elektor Junior Computer |
| name = Elektor Junior Computer |
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| website = <!--{{URL|example.org}}--> |
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| ⚫ | The '''Elektor Junior Computer''' was a simple [[MOS Technology 6502|6502]]-based [[microprocessor development board]] published in the 1980s in the Dutch, German and later French, Spanish, British and Indian versions of ''[[Elektor|Elektor/Elektuur]]'', in the form of a series of articles |
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| ⚫ | The '''Elektor Junior Computer''' was a simple [[MOS Technology 6502|6502]]-based [[microprocessor development board]] published in the 1980s in the Dutch, German and later French, Spanish, British and Indian versions of ''[[Elektor|Elektor/Elektuur]]'', in the form of a series of articles and four books. It was developed by the German engineer Loys Nachtmann. |
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| ⚫ | The Junior Computer was a virtual clone of the [[KIM-1]], only it did not use the special I/O+ROM chips (MCS6530) but rather an off-the-shelf [[MOS Technology 6532|6532 RIOT]] and a 2708 1K [[EPROM]]. It also had a different physical shape, as it used the [[Eurocard (PCB)|Eurocard |
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The books are available in the [https://archive.org/search?query=subject%3A%22Junior+computer%22 Internet Archive]. |
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| ⚫ | The Junior Computer was a virtual clone of the [[KIM-1]], only it did not use the special I/O+ROM chips ([[MOS Technology RRIOT|MCS6530]]) but rather an off-the-shelf [[MOS Technology 6532|6532 RIOT]] and a 2708 1K [[EPROM]]. It also had a different physical shape, as it used the [[Eurocard (PCB)|Eurocard board]], and a 31-pin [[DIN connector]] for I/O and a [[DIN 41612]] connector for system expansion. It was delivered as an [[electronic kit]] or could purchased as two [[printed circuit board]]s (main board and [[seven-segment display]] board) only, for components to be installed. |
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As it was much lower in price than an original KIM, many more Junior computers (several thousands) were used in the Netherlands, Germany and France, than original KIM-1s. |
As it was much lower in price than an original KIM, many more Junior computers (several thousands) were used in the Netherlands, Germany and France, than original KIM-1s. |
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Later extension boards were developed, and a BASIC interpreter was ported. |
Later extension boards were developed, and a [[BASIC interpreter]] was ported. |
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Elektor expansion boards specifically for the Junior were an I/O interface card (including a [[MOS Technology |
Elektor expansion boards specifically for the Junior were an I/O interface card (including a [[MOS Technology 6522|6522 VIA]], a tape recorder interface and a [[RS-232]] port), a VDU ([[video terminal]]) (an improvement of the previous "elekterminal" design), an EPROM and [[Static random access memory|SRAM]] expansion board, a 16/64 KB [[DRAM]] board and [[EPROM programmer]] board, and a [[floppy disk controller]], as well as a dozen smaller boards for small improvements and interfaces. |
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== External links == |
== External links == |
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* [https://web.archive.org/web/20090430065614/http://www.hansotten.com/coljunior.html pictures of the Junior-Computer and several expansion boards] |
* [https://web.archive.org/web/20090430065614/http://www.hansotten.com/coljunior.html pictures of the Junior-Computer and several expansion boards] |
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* [http://retro.hansotten.nl/6502-sbc/elektuur-junior/ elektuur unofficial Junior computer website] |
* [http://retro.hansotten.nl/6502-sbc/elektuur-junior/ elektuur unofficial Junior computer website] |
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* [https://archive.org/search?query=subject%3A%22Junior+computer%22 Internet Archive] |
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[[Category:Early microcomputers]] |
[[Category:Early microcomputers]] |
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Latest revision as of 03:26, 28 October 2024
| Developer | Loys Nachtmann |
|---|---|
| Type | microprocessor development board |
| Release date | 1980s |
| CPU | 6502 |
The Elektor Junior Computer was a simple 6502-based microprocessor development board published in the 1980s in the Dutch, German and later French, Spanish, British and Indian versions of Elektor/Elektuur, in the form of a series of articles and four books. It was developed by the German engineer Loys Nachtmann.
The books are available in the Internet Archive.
The Junior Computer was a virtual clone of the KIM-1, only it did not use the special I/O+ROM chips (MCS6530) but rather an off-the-shelf 6532 RIOT and a 2708 1K EPROM. It also had a different physical shape, as it used the Eurocard board, and a 31-pin DIN connector for I/O and a DIN 41612 connector for system expansion. It was delivered as an electronic kit or could purchased as two printed circuit boards (main board and seven-segment display board) only, for components to be installed.
As it was much lower in price than an original KIM, many more Junior computers (several thousands) were used in the Netherlands, Germany and France, than original KIM-1s.
Later extension boards were developed, and a BASIC interpreter was ported. Elektor expansion boards specifically for the Junior were an I/O interface card (including a 6522 VIA, a tape recorder interface and a RS-232 port), a VDU (video terminal) (an improvement of the previous "elekterminal" design), an EPROM and SRAM expansion board, a 16/64 KB DRAM board and EPROM programmer board, and a floppy disk controller, as well as a dozen smaller boards for small improvements and interfaces.