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The Cambridge Computer Z88 is now quite an old computer (released in late 1987) and is Z80 based. It was then, I still think now in many respects, ahead of its time with its versatility and functionality. It still has a large following and is surpisingly easy to program (it has BBC BASIC and Z80 assembler programming languages as part of its operating system). It has many features, which are discussed further at the Z88 Korner, but please find even more information at Z88 Forever!.

The reason why I chose this computer for my project is because of the following:

• It consumes very little energy; Duracell AA size batteries will give the Z88 1 year's standby time and 20 hours of continuous use (show me a PC laptop that can do that!)
• Has a more than adequate clear LCD display (8x94 characters)
• It uses a Z80 8 bit processor - important to me because I can program Z80 assembler!
• It is very light and is the size of an A4 pad
• It is very easy to develop machine code programs on
• It is quite easy to develop hardware interface cards for it

The Skyguider interface box connects to one the Z88's card slots. As such the application program and object databases for the DSC can be stored on an EPROM chip in the interface box. Click on the following picture to see the Z88 and interface box.