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|  MIL-D-81347C(AS)
Logic Unit 3 Subunits - Logic Unit 3 shall contain the following
3.4.4
subunits:
No. Required
Multi-Purpose Display (MPD)
2
Interface
1
Pilot Display Interface
1
Function Generator
1
Master Timing Logic
1
Maintenance Control Panel,' Logic
1
Power Supply
Logic Unit 4 Subunits - Logic Unit 4 shall contain the following
3.4.5
subunits:
No. Required
1
Data Multiplexer Subunit
1
Auxiliary Display Logic
1
Drum Auxiliary Memory Subunit
1
Maintenance Control Panel/Logic
1
Spare Computer Channel Subunit
1
Power Supply
Keysets and Panels - Included in the system shall be the following
3.4.6
separate items:
No. Required
3
Universal Keysets
1
Pilot Keyset
1
Ordnance Panel
1
Armament `Ordnance Test Panel
Logic Unit 1 Functions - The subunits of Logic Unit 1 shall per-
3.4.7
form the following system functions in conjunction with other equipments.
(1) Digital Input Multiplexer - The Digital Input Multiplexer per-
mits one computer input channel to service up to 16 input peripheral equipments.
(2) Digital Output Multiplexer - The Digital Output Multiplexer
permits one computer output channel to service up to 16 output peripheral equipments.
(3) TACCO Tray Logic - The TACCO Tray and TACCO Tray
Logic allow the Tactical Coordinator (TACCO) to enter information into and receive information from
the computer. This information transfer, in conjunction with the data presented on the TACCO MPD,
permits the TACCO to prosecute the tactical situation.
(4) Universal Keyset Logic - A Universal Keyset Logic and a
Universal Keyset allow a sensor operator to enter information into and receive information from the
computer.
(5) Pilot Keyset Logic- The Pilot Keyset Logic and Pilot's Key-
set allow the pilot to enter information into and receive information from the computer.
(6) CRT Tray Logic - The CRT Tray Logic and CRT Tray per-
mit the operator to enter information into and receive information from the computer.
(7) Ordnance Panel Logic - The Ordnance Panel Logic and Ord-
nance Panel permit the operator to enter information into and receive information from the computer.
(8) Status Logic - The Status Logic provides for the transmission
of status data from several aircraft systems to the computer. The status logic also provides for
transmission of data from the computer to the navigation system.
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