Assignee Hewlett-Packard Company and Inventors Peter Dickinson, Thomas E. Osborne, France Rode and Allen H. Baum were granted the patent for Scientific Calculator on July 12, 1977. U.S. Patent No. 4,035,627.
A battery powered hand-held calculator for performing arithmetic, triganometric and logarithmic functions and displaying the results thereof is provided with a clock mode with performs the function of a clock and displays real time or the function of a stopwatch and stores and displays the times at which recorded events have taken place.
