Features - Sharp MZ-80B Owner's Manual

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1.1 Features
The MZ-80B is a compact personal computer with superb operability which features a variety of
software and freely expandable hardware.
The CPU (Central Processing Unit) and the main memory form the nucleus of the computer. The
MZ-80B uses the Z80A microprocessor (equivalent to the LH0080A produced by Sharp), one of the
best microprocessors currently available for central processing units. The main memory which can be
directly accessed by the CPU is constituted entirely of random access memory. It is expandable to
64K bytes. Consequently, no fixed programs or data reside in the main memory and any type of
system software can be loaded into it from an external file. This makes it possible to make the best
possible use of the main memory area.
The 1/0 devices, timer, initial program loader, etc., support the CPU and main memory. The initial
program loader is automatically started when the power switch of the MZ-80B is turned on. It loads
programs from a cassette tape or diskette file , then transfers control to the program loaded.
A typewriter keyboard, numeric pad, special function keys, cursor control keys and cassette tape
deck control keys are included on the control panel. A variety of control commands and data can be
entered with these keys.
Both character display and graphic display are possible, allowing various forms of data representa-
tion.
FIGURE 1.1 Personal Computer MZ-80B