Somebody Has Made an Apollo DSKY with Arduinos

The Rocketry Forum

Help Support The Rocketry Forum:

OverTheTop

Well-Known Member
TRF Supporter
Joined
Jul 10, 2007
Messages
5,526
Reaction score
2,894
Location
Melbourne Australia
Available on Tindie
This one cheats a little and uses LC displays for output instead of backlit annunciators and seven-segment displays.

2021-07-08T16 16 39.243Z-20210704_190015.jpg
 

Blast it Tom!

Well-Known Dweeb
TRF Supporter
Joined
Dec 30, 2019
Messages
1,198
Reaction score
877
Location
Pittsburgh
Makes you glad for modern displays and processing power! Was it this one that Mike Collins related having to punch number after number into, maybe 100 or more in a row, and they all had to be correct?
 

OverTheTop

Well-Known Member
TRF Supporter
Joined
Jul 10, 2007
Messages
5,526
Reaction score
2,894
Location
Melbourne Australia
Was it this one that Mike Collins related having to punch number after number into, maybe 100 or more in a row, and they all had to be correct?
I have not heard that story but I expect so. There weren't too many computers around at that time! FYI, the computer was made using entirely NOR gate integrated circuits and consumed around 60% of the world's integrated circuit manufacturing capability at the time to make them. It really was at the leading edge of the microelectronics revolution. Also, LEDs had not been invented yet so the displays were vacuum fluourescent tubes and needed around 100V to operate. Transistors could not switch that sort of voltage reliably back then so they used transistors to switch relays which provided voltage to light up the segments in the display. So each segment of each digit of each display had a transistor and a relay. There were a lot of them :eek:.
 
Top