Sharp PC-1246 User Manual

• Ba s i c 2 KB RAM
S y st e m a rea : 0800H - OAFFH
U ser a r ea : OBOOH - OFFFH
•E x pan sio n 2KB RAM (PC - 1 2 4 7 on l y )
Al I o pen for u se r ar e a
2000H r------,
: : 2K B , exp a n sio n
2 7FFHL---- - ' (PC - 1 2 47 o n l y )
~8 b it-'1
o _ sooHI
_ I 2 K B , basic
1 0
FF F H '---------'-
SHARP CORPOR A TION
3 7FFH I J
r-10 bi t ---i
MAIN ROM
14K s tep
x 10 bi t
( 17Kb yte s )
[ CPU interna l ROM ] [ E x t e rnal RAM ]
OOOOH ....-- - --~
3 . MEMORY MA P
Auto power o ff time : Approx . 11 minutes
Options: CE-124 , C E-125, ~E-126P ,
CE - 152
16-characte r l i qu i d c ry s tal dis -
play with 5 x 7 do t cha r act e rs
(LF7133E)
Character dimension s :
4 . 5(H) x 2 . 7(W ) mm
Character pitch : 3.45 mm
0 ° C ~ 40 ° C (32° F ~ 104 ° F)
6V DC Lithium c ells
Type : CR-2032
App rox . 1000 h o u r s
(D i sp l ay: 55555555, amb ie nt
tempe r ature : 20 ° C ( 68 ° F ). The
operating time s l igh t ly var ie s
depending upon the use of
battery.)
Battery will last fo r a pe r iod of
2.4 m o nth s , assuming t he us e of
on e hour a day w h i c h consi sts of
10 m i nute s of op er at i on or pro-
gram e x ecution and 50 m i nut e s
of d i splaying.
0.07 w
135(W) x 70(D) x 9.5(H )mm
5 - 5 / 16"(W) x 2 - 3 / 4"(D) x3 / 8"(H)
95g (with cells)
Weight :
Power Consumption :
Dimensions:
Operating Time:
Display:
~"'"'
0.01~~
o.~~~
w~ . 0 5
0.5
Operat i ng Temperature :
Powe r Supply:
PC- 1246
PC -1 2 47
OOZPC12 4 7 SM / E
MODEL
CODE
Memory P r otection :
E d i t i ng F e atu r es :
Basic calculations :
Add i t i on , s ubst r act i on multi -
pl i cation, division
Funct i on calculations:
Trigonometric and inverse
trigonometric functions, loga-
t i thmic and exponential func-
tions, angle conversion , square
root, interger, absolute , sign
operators , tt .
Cursor left and right ( > , < ) r
character inse r t (INS) , character
delete (DEL), line up and d o wn
( i . t )
Battery backup (the contents of
programme and its data are
retained at power - off.)
Operators:
10 stacks
5 stacks
16 stacks
8 stacks
Sub - rou ti ne:
For - NEXT :
Funct i o n :
Data :
Stack :
Programming Language:
CPU:
System ROM:
Memory Capacity :
Calculating System:
10 digits (mantissa) + 2 digits
(exponent)
Algebric system (with priority
judgement function)
BASIC
4 bit CMOS
17.4K bytes
System Area
About 0.5K bytes
Area dedicated to data
208 bytes
Program / data area
1278 bytes (PC-1246),
3326 bytes (PC-1247)
Calculating Capacity:
2. SPECIFICATIONS
PR I NfUSJM;GOSUBRETIJRN D I M E ND CSAVE C LOAD P...+NP
0 0 ~ 0 ~ ~ ~ D l rnTER I
S P C
INPUT ! f 1HEN G01D FOR TO STE P J\'EXT L I ST RUN
0 ~ @.l0@JGJ [TIIBJ(g~
! !I # $ ~ & ? : ' :
@J0000~ @l [i]@J 0
D E G RAD G RAD
RU N P RO
S HI FT E I
I B US Y p DEF
P O WER
OF F C=:] ON
ON
~
[I] [I]
~
DE L
I NS
~
[3J
[TI
~
POCKET CO MPUTER
SHARP
1. KEY LAYOUT
SHARP
-
P C -1 246
SERVICE MANLiAl

Sharp PC-1246 Specifications

General

Brand	Sharp
Model	PC-1246
Category	PDA
Language	English

Summary

1. KEY LAYOUT

2. SPECIFICATIONS

Calculating Capacity

Specifies the numerical range for calculations, including mantissa and exponent digits.

Calculating System

Details the algebraic system and priority judgment function used for calculations.

Programming Language

Identifies the programming language supported, which is BASIC.

CPU

Specifies the central processing unit, a 4-bit CMOS.

System ROM

Indicates the size of the Read-Only Memory, 17.4K bytes.

Memory Capacity

Details system area (0.5K bytes) and data area (208 bytes, 1278/3326 bytes for programs).

Stack

Describes the stack structure for sub-routines, FOR-NEXT, functions, and data.

Operators

Lists basic and function calculations supported by the operators.

Editing Features

Outlines cursor movement, character insertion, and line editing capabilities.

Memory Protection

Explains battery backup for retaining program and data when power is off.

3. MEMORY MAP

4. CPU (SC61720D03)

CPU Signal Description

Details the function and I/O of each pin of the SC61720D03 CPU.

5. PC-1246 CIRCUIT DIAGRAM

7. PC-1247 CIRCUIT DIAGRAM

9. CHECK ITEMS AND CAUTIONS

Off Current Check

Measures current consumption when the device is in the OFF state.

On Current Check

Measures current consumption when the device is in the ON state.

RAM Capacity Check

Procedure to verify RAM capacity by entering specific commands in PRO mode.

Battery Replacement Procedure

Procedure to follow after replacing the battery, involving power on and reset.

Auto-Power-Off Check

Verifies the auto-power-off function operates within the specified time limits.

10. LCD (LF7133E)

11. PARTS LIST & GUIDE

External Parts

Lists external parts of the PC-1246 and PC-1247 models.

Electronic Parts

Details internal electronic components with part codes, descriptions, and PCB locations.

Accessories

Lists accessories and documentation provided with the calculator.