Apollo 11: Reflecting on how far we’ve come technologically
Today marks the 40th anniversary of the Apollo 11 space landing, an event that achieved the simplest of impossible missions: perform a manned lunar landing. And among the wonders of the day, and the entire mission—when viewed from a 2009 perspective—is the relative modesty of the tools and technology that NASA had to work with, specifically, the main computer carried aboard the Apollo 11 capsule.
According to FlightGlobal (“Serious About Aviation”), the Apollo Guidance Computer, or AGC, had just 64KB of memory and only 0.043 MHz of processing power. That was enormous at the time, of course, but compare those specs with those of modern netbooks—the pint-sized laptops that are considered underpowered by today’s computing standards.
The typical netbook has over 100 GB of capacity – more than a million times that of the computer on which NASA staked an historic mission and the lives of three astronauts. And a netbook’s 1.6GHz processor is several thousand times faster than that of 1969’s AGC.
On the ground, the mission depended on a host of mainframe computers, including a number of IBM System 360/Model 75. Each of these IBMs occupied an entire large room (as shown in the photos) and cost at least $2 million.

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