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@ Keyboard layout
® Model:
@ Programming
language:
@ Microprocessor:
@ System ROM:
@ Memory capacity:
@Stack:
® Basic calculator
functions:
SERVICE MANUAL
mopvEL PC-1425
sna
POCKET COMPUTEA PC-1425
oA
KS
DEG
Sil th ann oo (stu,
tix)
X4p)
X20)
OF
PC-1425
10
digits
(exponent)
In order
of mathematical
expres-
sion
(with
priority
determination
function)
(mantissa)
+
2
digits
BASIC
CMOS 8-bit CPU
136 Kilobytes (KB)
System Area:
Approx. 1.1 kilobytes (KB)
Data only area:
208(B)
Program/Data area: 6878 (B)
Subroutine: .........
10 stacks
FOR-NEXT:
.........
5 stacks
Function:
..........
16 stacks
Data
nats ic duke bao
Sees 8 stacks
Fundamental:
Four math rules
Functions:
Trigonometric and inverse trigo-
nometric
functions,
logarithmic
and exponential functions, angle
> am a
[
=
Cm)
NP
(enter _}
[EXECUTE
|
®@ Editing functions:
® Serial 1/O functions:
Standards:
Baud rates:
Data bits:
Parity bits:
Stop bit:
Connectors used:
Output signal level:
Interfacing signals:
® Memory protection:
SHARP CORPORATION
|
ES
conversion,
square
and
square
root, sign, absolute, integer, rela-
tional
operators,
logical
opera-
tors.
Horizontal cursor control (BP, @)
Insertion (INS)
Deletion (DEL)
Line up and down (4, ft)
Start-stop
transmission
(asynchro-
nous) system.
Only half duplex.
300, 600, 1200 Baud
7 or 8 Bits
Even, odd, or no-parity
1 or 2 Bits
15-pin
connector
(for
external
equipment)
CMOS level (4-6 Volts)
Inputs:
RS, CS, CD, PAK
Outputs:
SD, RS, RR, ER, PRO
Others:
SG, FG, VC
Program, data, areas are backed up
by battery during power off.
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