Motherboard - NorthStar HORIZON Manual

MOTHERBOARD PARTS LIST
I~TEGRATED
CIRCUITS
2
1
1
1
1
1
2
1
1
RoSISTORS
74LS03
74LS04
74LS05
74LS14
74 LS 7 4
74LS132
74LS136
74 LS 13 8
74LS139
2
3
1
1
1
1
1
1
74LS161
74LS241
74LS259
74LS393
1488
1489
4020(MOS)
8251(MOS)
3
2
1
2
1
1
1
2
2
1
1.2K
2.2K
4.7K
5.6K
lK
lK
560
220
330
100
1/4 wa tt 5%
1/4 watt 5%
1/4 watt 5%
1/4 watt 5%
1/2 watt
1/4 watt
1/4 watt 5%
1/4 watt 5%
2 watt
2 Watt
CAPACITORS
3
3
H
4
2.2uf dipped tantalum
6.8uf dipped tantalum
.047uf ceramic disc
470pf ceramic disc
R~GULATORS
1
1
1
5 volt, 7805 or 340t-5
12 volt. 78L12
-12 vol t, ,9L12
E
SOCKETS
14
9
3
1
14-pin sockets
liS-pin sockets
20-pin sockets
28-pin sockets
MISCELLANEOUS PARTS
1
1
3
9
printed circuit board, HRZ-MB
transistor, 2N3904
16-pin DIP headers
North Star HORIZON Computer