HP Calculator Heritage HP 41 - 1980 This is the ads that appeared worldwide newpapers. The HP-41 handheld computer was chosen by NASA as a regular member of the Space Shuttle team. If you need be, it cah help land the Space Shuttle without the help of Mission Control. The HP-41 is an extraordinarily powerful handheld computer all by itself. When combine with peripherals, it becomes the hart of the complete personal computer system.

A Hewlett-Packard Christmas Gift This year you can calculate a Memorable Christmas. Published: The Straits Times, 15 December 1979, Page 25

The HP-33C, HP-34C & HP-38C … And The Memory Lingers On… Published: The Straits Times, 10 December 1979, Page 2

The HP 34C is a scientific programmable calculator. HP 34c has a full complement of scientific and math functions, it was the first to offer root finding and numerical integration. HP 34c Solve (Root Finding) The Solve function could find real roots for any equation which could be expressed in the form f(x) = 0. To use the Solve function, the user keyed in a subroutine to evaluate f(x) which left the value in the X register.

William Morton Kahan (born June 5, 1933, in Toronto, Ontario, Canada) is a mathematician and computer scientist whose main area of contribution has been numerical analysis. Among his colleagues he is known as Velvel Kahan. He attended the University of Toronto, where he received his Bachelor’s degree in 1954, his Master’s degree in 1956, and his Ph.D. in 1958, all in the field of mathematics. Among his many contributions, Kahan was the primary architect behind the IEEE 754-1985 standard for floating-point computation (and its radix-independent follow-on, IEEE 854) and developed the Kahan summation algorithm, an important algorithm for minimizing error introduced when adding a sequence of finite precision floating point numbers.

HP Calculator Heritage HP 33E - 1979 The HP 33E and HP 33C was a handheld LED display calculators introduced in 1977. This advertisement appeared in a leading Japanese Magazine. Hewlett-Packard Company - Corvallis Division

HP Calculator Heritage HP 19 - 1978 The HP-19C and HP-29C both have continuous memory capability so the programs you store are saved, ready for use, until you clear or overwrite them. You can merge up to four keystrokes in each of the 98 steps of continuous program memory on both the HP-19C and the HP-29C. Caption: Two new powerful keystroke programmables from Hewlett-Packard. The new HP-19C with Continuous Memory and printer.

Calculators From Hewlett-Packard The new generation personal calculators from Hewlett-Packard. For Science: HP-31E Scientific; HP-32E Advance Scientific; HP-33E Scientific Programmable. For Business: HP-37E Business; HP-38E Business Programmable. Published: The Straits Times, 30 August 1978, Page 3 The Straits Times, 19 September 1978, Page 8 The Straits Times, 26 January 1979, Page 2 The Straits Times, 16 March 1979, Page 2 The Straits Times, 20 July 1979, Page 8