VTech PreComputer 2000

The VTech PreComputer 2000 (also known as the Genius Leader 2000/2000 Plus) 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 battery or AC adapter. It is the successor to the VTech PreComputer 1000 model.
Specifications.
The VTech PreComputer 2000 relies upon a Z80B clone as its processing core.
A 1MBit (128Kbyte) ROM contains the Operating system and program data which can be expanded via the cartridge slot.
Output is supplied by a 2 row 20 column dot-matrix LCD panel.
This machine features a rudimentary implementation of BASIC offering truth tables, arrays, input statements and variables, allowing users to create simple text programs. One program may be held in memory at a time.
Features.
The VTech PreComputer 2000 offers the following features:
Expansion Cartridges.
Cartridges for the VTech PreComputer 1000 could be used but the following cartridges were available for the VTech PreComputer 2000: The cartridges could only be inserted with the power off before re-powering and pressing the 'Cartridge' button to activate.