|Object Name:||Discrete Input Circuit Board|
|Year of Manufacture:||1968|
|Location:||Main Object Store|
[Issu]e No D.
Ser No EA006/68
The HUD system on the A-7 had a number of inputs from the Control Panel and other sources which were in the nature of switches, a simple on or off function. These are known as ‘Discrete Inputs’ and this Circuit Module manages those into the HUD for example to switch on a mode or a symbol on the display.