HP-41CX alphanumeric handheld computer By the time the HP-41CX was introduced, it was called a computer rather than a calculator. It had more than twice as many built-in functions and three times as much memory capacity as the HP-41C. When the HP-41C handheld calculator was introduced in 1979, it was the first calculator that could display alphabetic characters as well as numbers. But more importantly, it was fully programmable and expandable.

1983.11.30 The HP-41CX The latest hard and soft facts from Hewlett-Packard. Reference: TST, 30 November 1983, Page 26 - Hewlett-Packard Singapore Pte Ltd

1983.04.27 HP Pocket The Difference HP-10C; HP-11C; HP-15C The prices are down, your productivity’s up. Published: TST, 27 April 1983, Page 9 - Hewlett-Packard Singapore Pte Ltd

Designed to solve an unprecedented number of engineering and computer science problems. Easily. Accurately. Published: TST, 7 January 1983, Page 19 - Hewlett-Packard Singapore Pte Ltd TST, 10 February 1983, Page 33 - Hewlett-Packard Singapore Pte Ltd

HP 16c Computer Scientist Calculator It’s got all the bases covered.

The Professional Choice. Published: TST, 14 December 1982, Page 16 - Hewlett-Packard Singapore Pte Ltd TST, 20 December 1982, Page 26 - Hewlett-Packard Singapore Pte Ltd

Move Ahead With The HP-10C Published: TSTs, 2 December 1982, Page 36 - Hewlett-Packard Singapore Pte Ltd TST, 8 December 1982, Page 22 - Hewlett-Packard Singapore Pte Ltd

HP Calculator Heritage HP 15c - 1982 The tagline ‘Pocket the difference’ may sound a little distasteful these days. In the wake of Enron, Worldcom and Refco scandal where the top executives of once reputable companies walk the talk by Pocketing the difference. Anyway, the HP 15c is one of the most advanced scientific programmable and features matrix manipulation, integrate, solve, and complex arithmetic. Caption: Pocket the difference. HP-15. The prices are down, your productivity’s up.