Wallace, James; Jim Erickson (1992). Hard Drive: Bill Gates and the Making of the Microsoft Empire. John Wiley & Sons. pp. 81–83. ISBN0-471-56886-4. https://archive.org/details/harddrivebillgat00wall_0/page/81"When Harvard officials found out that he (Gates) and Allen had been making extensive use of the university's PDP-10 to develop a commercial product, they were not pleased." The computer was funded by the Department of Defense and was under the control of Professor Thomas Cheatham. "Although DARPA was funding the PDP-10 at Harvard, there was no written policy regarding its use."
“New Products”. Computer (IEEE) 5 (6): 59–63. (November 1972). doi:10.1109/C-M.1972.216999. "The TI-2500 portable electronic calculator is a four-function, full-floating decimal-point unit with an eight-digit light emitting-diode display. With a suggested retail price of under $120, the TI-2500 calculator is rechargeable and capable of portable or ac operation." The calculator was previewed in June 1972 and formally released on September 21, 1972
“The Computer Company you can afford.”. Computer (IEEE) 8 (5): 16. (May 1975). doi:10.1109/C-M.1975.218951.
Morrow, George; Howard Fullmer (May 1978). “Microsystems Proposed Standard for the S-100 Bus Preliminary Specification, IEEE Task 696.1/D2”. Computer (IEEE) 11 (5): 84–90. doi:10.1109/C-M.1978.218190.
espacenet.com
worldwide.espacenet.com
US patent 3800129, Richard H. Umstattd, "MOS Desk Calculator", issued 1974-03-26 The Electronic Arrays, Inc. calculator chip set that was used in the MITS 816 calculator.
Mims, Forrest (December 1987). “A Homebrew Analog Computer”. Modern Electronics4 (12): 39–41. ISSN0748-9889.Mims describes the analog computer he built in high school. The article has a photograph and schematics of the computer.
