Appendix F - Specification

Appendix F - Specification

Power source    4 x AA Alkaline Cells (MN1500, LR6) providing 20 hours of use.

AC Mains adaptor (6.5 v DC ±10%), 500 mA, centre positive.

Weight    900 g (1.98 lb).

Dimensions    294 mm (L) x 210 mm (D) x 23 mm (H)

(111/2"x 81/4"X 7/8")

Keyboard    QWERTY, 64 keys including INDEX, MENU, and HELP.

Sound    Miniature loudspeaker, used for alarm or warning.

Serial 1/0 Port    RS232, connector 9-way 'D' female.

Operating system    Unique to Cambridge Z88 (concurrent, 4M Bytes address range).

Operating temperature    0°C to 40°C (32T to 104-F).

Microprocessor    CMOS Z80A

Internal memory    DRAM CMOS 32K Bytes

ROM CMOS 128K Bytes

Internal options allow the use of up to 512K RAM and 512K ROM in future machinp.s.

Memory cards    Slots 1, 2, or 3 1M Byte per card maximum

Slot 3 also programs EPROM cards.

CMOS RAM    Random Access Memory. Data retained while machine is powered.

CMOS EPROM    Erasable, Programmable, Read-Only Memory

Data retention measured in years. Card can be removed from Cambridge Z88 without data loss. Eraser available from Cambridge Computer Limited.