There are also some books relating to the genealogy program, I think a whole issue of BYU Studies, which is online at a commercial site run by LDS Media, that because of it's nature, discusses the Church's use of technology and computers for family history.
Another book discusses the early familysearch things, that is 'The Second Rescue', likely out of print but you can find it around at used bookstores.
The system used for the temples from about 1980 to 1991 had, in some areas the nickname, 'Springville' because it was developed, including some hardware elements, by a person in Springville, Utah. When the temples went to a new system in 1991, since superceded by yet another system that prints things out much more nicely than then, I saw alot of equipment from the Provo Temple, including the blonde oak cabinets they were housing some of the printers (which used adder paper (sometimes called 'adder tape') by the way) and other equipment like keyboards, etc., in the local DI. There were articles in the Church News in 1980 (should be available in the HBLL at BYU) about this system as well.
Elder Nelson's 1998 talk 'A New Harvest Time' discusses technology to a degree, check any talk about family history for more clues about technology and the Church as it existed over the years too.