| layout | date | from | serial | subject |
|---|---|---|---|---|
tindallgram |
Oct 17 1966 |
FM/Deputy Chief, Mission Planning and Analysis Division |
66-FM1-135 |
Verification of LGC when powered-up in space |
The other day at MIT, when we were discussing the alternate mission AS-278B, the question came up of how the astronaut assures himself that the contents of the erasable memory is as it should be when he first powers-up the computer in space. Since there seemed to be some confusion or uncertainty at MIT, I suppose that situation is the same throughout the universe. We were told, or at least I think we were told, that when first turning on the computer after it has been completely powered-down there is no assurance that the contents of the erasable memory will be the same as it was when powered-down. Since on every manned LM mission the computer must be brought on line from a completely dormant state, some procedure must be established for checking this portion of memory, I suppose. Is anyone within the sound of my voice working on that? In fact, who is supposed to? I guess we ought to ask MIT to do something, and we will.