ZiLOG Z80 Handbook page 262

an 8% inch page. The printer is a 5- by 7-dot matrix printer that
prints 12 characters per inch horizontally and 6 lines per inch ver-
tically. The associated interface card may be interfaced to existing
I/O ports.
A 4096-pixel Color Graphics Board provides a color display of
a 64 by 64 matrix. Three on-board 4K dynamic memories (red,
green, and blue) result in eight different hues in any of the 4K
pixels. The Color Graphics Board is driven by two 8-bit parallel
I/O ports.
Other I/O equipment includes a 76-key ASCII keyboard with
cabinet, a stand-alone cassette interface, prototyping boards and
extenders, and miscellaneous hardware.
DIGITAL GROUP SYSTEMS
Various system combinations are offered by The Digital Group
ranging from a four-board Z-80 system with 10K of RAM, I/O
boards, and TV Readout/Audio-Cassette Interface, to a "hard copy"
system with Z-80 CPU, TV Readout/Audio-Cassette Interface, two
I/O Boards, 18K of RAM, Cassette Drive Interface with four Cas-
(A) Table-top arrangement.
96 COLUMN PRIMER, POWER SUPPLY,
INTERFACE CARD & CAB INET
KEY 1 & CB
TWO FULLS I ZE FLOPPY DISK DRIVES
CONTROLLER CARD AND CABINET
FOUR DRIVE DIGITAL
CAPACITANCE KEYBOARD
CASSETTE UNIT
AND CABINET AND CABINET
(B) Cabinet identifier.
Courtesy The Digital Group, Inc.
Fig. 18 -6. The Digital Group System 7-the ultimate.
271