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Apollo missions, Comparision - Coggle Diagram
Apollo missions
Apollo's development
not dumb
increase in number and sophistication
limited resource
limited amount of memory
use of every single byte available
No fancy touch and GUI on computers used
4 Computers used
Launch Vehicle Digital Computer (LVDC)
Apollo Guidance Computer
Command Module
Earth orbit to moon and back again
to be independent
Lunar Lander
control landing
ascent back to command module and docking
Operating System used
Linux ,Unix, windows and iOS
highest priority to emergency program
basis of mission critical system afterwards
2K RAM and 36K ROM
Woven by hand
4th computer
not used
contract given to MIT in August 1961 instead of NASA's IBM
danger of sinking if not AGC to work
Comparision
Apollo Guidance Computer
12300 transistors
not general purpose computers
Specific task computer
crash proof
First embedded computer-1962
real time problem solving
briefcase size from room
defect
if failed people could die
not possible with 1960's technology
not accurate navigational course
wrong orbit calculation
Apollo 11 almost aborted
flood of signals
work with landing radar and astronaut
to land on moon
reset protection
just like sleep mode on pc
saved mission from aborting
orientation of lander from Armstrong
descent of AGC to successful landing
microcontoller
paradigm shift in space
computing for future
Apple
ARM A8 processor
1.6 billion transistors
iphone 6
1GB RAM 128 GB ROM
3.5 million transistors
more computing power than NASA's Apollo missions