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)
(11-1/2" x 8-1/4" x 7/8")
Keyboard
 QWERTY, 64 keys including INDEX, MENU, and HELP.
Sound
 Miniature loudspeaker, used for alarm or warning.
Serial I/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 (32° to 104°F).
Microprocessor
 CMOS Z80A 3.2768Mhz
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 machines.
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.