Zenith Z-100 PC series Service Manual page 121

Page
6-9
Parts List
Table 6-1 (continued): CPU/Memory Card Parts List
COMPONENT ZDSPART
NUMBER NUMBER DESCRIPTION
U230 HE-443-1120 Quad multiplexer, 2-input, 74F257
HE-434-299 Socket
U231 HE-444-361 Address decoder,logic array, 16L8A
HE-434-311
Socket
U232 HE-443-837 8-bit latch, 74LS373
HE-434-311 Socket
U233 HE-443-791 Buffer/driver, 3-state, 74LS244
HE-434-311 Socket
U234 HE-443-1168 Coprocessor, 8087-2 (optional)
HE-434-253 Socket
U235 HE-443-1187 Microprocessor, 8088-2
HE-434-253 Socket
U236 HE-443-1073 Quad AND,2-input, 74ALS08
HE-434-298 Socket
U237 HE-444-358
Monitor ROM, EPROM, 27256-30
HE-434-312 Socket
U238 HE-444-360-1 Gate array control, logic array, 14L8
HE-434-368 Socket
U239 HE-443-837 8-bit latch, 74LS373
HE-434-311 Socket
U240 HE-443-1066
Programmable interval timer, 8253-5
HE-434-307 Socket
U241 HE-443-1012 Interrupt controller, 8259A
HE-434-312 Socket
U242 HE-443-1027 RAM, 200 ns, 6116-P4
HE-434-307 Socket
U243 HE-443-755 Hex inverter, 74LS04
HE-434-298 Socket