Sharp PC-1261 - 9. CIRCUIT DIAGRAM; Overall Circuit Diagram

- 9 -
D
c B
A
RA M 4 RAM 2 P - COS t ype
L-- -- ------------
R A M S
2 K
RAM
chi p
2 K
RAM
ch ip
I >=
I >:
Chip
RAM 3
RA Ml
2K b y te
RAM
2 K
RAM
c h i p
SC6 13 2 5 6FG53
1 ;;::
I >:
2 K
RA M
c h i p
2
Ad dr e~s A 0---.- A 10 E!--r:izi;j tl;j t;g [Zi[µ: gg-gm:[j
R / W - ---- --------li ---- --------- ---+- -- ----4
V GG
H A
32K ROM
3
Dat a bus 01 ~ 0 8
, ----- --
1
I
I
I
I
I
4
DI S PL AY 2
SC4 3536
D J S P L AYl
SC 4 3 536
t
Se gm en t Seg m ent SI .--... 562
I
-- -+-,.....--------
5
6
CIRCUIT D I A GRAM