Sharp PC-1280 Service Manual

171-Pin
Connector
PC- 1280
POCKET COMPUTER PC—1288 |
DISPLAY SIZE: 24*2 LINES
Dial
5
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Top View of PC-1280
INTRODUCTION
PC-1280 was designed to close with a tight fit to protect its LCD
screen and keyboard, and has the facility for double-precision
calculations.
2. Specifications
Model:
PC-1280 Pocket Computer
Processor:
8-bit CMOS CPU
Programming Language:
BASIC
System ROM:
136K Bytes
Memory Capacity:
System internal 1.6K Bytes Approx.
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(Memory expandable to 40KB using RAM cards)
Stack:
Sub-routine: 10 stacks
Function: 16 stacks
FOR-NEXT: 5 stacks
Data: 8 stacks
LCD Screen
LCD Contrast
RAM Slot
Keyboard
All-Reset>~
Button
CODE: 00ZPC1280SM/E
Cell
Compartment
Memory
Backup
Cell
Compartment
Memory
Protect
Switch
(Internal
memory only)
Bottom View of PC-1280
Operators:
Addition, subtraction, multiplication, division, trigonometric, and
inverse trigonometric functions, logarithmic and exponential
functions, angle conversion, square and square root, sign,
absolute, integer, relational operators, logical operators etc.
Numeric Precision:
10 digits (single-precision mode) /20 digits (double-precision
mode) (mantissa) + 2 digits (exponent).
Editing Features:
Cursor left and right, line up and down, character insert, character
delete.
Memory Protection:
CMOS Battery backup.
Interface Capability:
11 pin (For cassette interface, disk, printer, etc.)
Ram Card Slot:
Cards of 2KB, 4KB, 8KB, 16KB, or 32KB.
Display:
2-line 24-digit liquid crystal display with 5x7 dot characters.
Keys:
72 keys. Alphabetic, numeric, special symbols, and functions.
Numeric pad. User defined keys.
SHARP CORPORATION