VTech PreComputer 1000

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The VTech Precomputer 1000 is an electronic learning aid for ages 9 and above [1] manufactured by VTech and released in 1988 (USA) [2] and 1989 (Europe). It contains a dot matrix LCD screen, and a standard size keyboard. It features a number of activities, including trivia on science, history and general knowledge. [3]

Contents

The PreComputer 1000 is VTech's first child learning product to incorporate the BASIC programming language and is the predecessor to the PreComputer 2000.

Specifications

The VTech PreComputer 1000 relies upon a Zilog Z84C0004PEC (a Z80B [4] clone) as its processing core. A 16Kbit (2Kx8bit) 2K Sharp LH5116-10 [5] or Hyundai HY6116ALP-10 [4] SRAM is used for RAM. As of 1992, a CMOS version of the Z80 marketed as the Z84 is used.

A Toshiba TC531000CP 1MBit (128Kx8bit) 128K ROM contains the Operating System and program data. [4] This ROM can be augmented when a cartridge is inserted into the side mounted cartridge slot and then selected, thus providing expansion capability.

Text output is supplied by a single row 20 character dot-matrix LCD panel, sound output is via an inbuilt piezo element beeper.

Functions

The following functions are available on the unit: [6]

BASIC implementation

PRE-BASIC 1.0 is a simplified unstructured BASIC implementation includes a simple line editor with the ability to change, insert or delete characters on a program line. [6]

Supported features include: [6]

Expansion Cartridges

The following cartridges were available for the PreComputer 1000 and also supported in the PreComputer 2000. [1] The cartridges could only be inserted with the power off before re-powering and pressing the 'Cartridge' button to activate. [6]

The same Toshiba TC531000CP 128K ROM is used in some cartridges. [7]

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The VTech PreComputer 2000 is an electronic learning aid manufactured by VTech and released in 1992. It contains a dot matrix LCD, standard size keyboard, 34 activities for teaching in 4 different levels for 1 or 2 players and introductory computer programming with the BASIC programming language. It has an 80,000 word spell checker and a SAT word builder. It can be powered by a battery or AC adapter. It is the successor to the VTech PreComputer 1000 model.

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References

  1. 1 2 VTech UK Advertising Flyer Ref: 95-0155-18
  2. PreComputer 1000 Course Book. VTech Educational Electronics. 1988. ASIN   B000BSI01W.
  3. "VTech Laptops". YouTube.
  4. 1 2 3 By (2019-11-19). "Teardown: VTech PreComputer 1000 Is An Iconic PC In A Toy Wrapper". Hackaday. Retrieved 2020-06-30.
  5. "Vtech precomputer 1000 1992 PCB". Imgur. 2020-07-07. Retrieved 2020-07-10.
  6. 1 2 3 4 "VTech PreComputer 3in1 Computer Teacher Course Book".
  7. 1 2 "Precomputer 1000 Fantasy Trivia". Imgur. 2020-07-09. Retrieved 2020-07-10.