website/content/museum/hewlett-packard-hp-9810.md

title, categories, types, origins, years, cpus, params

title	categories	types	origins	years	cpus	params
Hewlett Packard HP-9810	Computers	Professional Computer	U.S.A.	1971	Serial 16-bit	name image company company_name specs tabs forum_thread photos adverts links related oc_id source HP-9810 /media/museum/photos/hp_9810_system_1.jpg /companies/hewlett-packard Hewlett Packard label value NAME HP-9810 label value MANUFACTURER Hewlett Packard label value TYPE Professional Computer label value ORIGIN U.S.A. label value YEAR 1971 label value BUILT IN LANGUAGE RPN (Reverse Polish Notation) based label value KEYBOARD 75 keys in 3 parts label value CPU Serial 16-bit label value SPEED Unknown label value RAM 51 registers and 500 program steps label value ROM Unknown label value TEXT MODES 3 lines of 15 numeric chars. Each line displays one register label value GRAPHIC MODES None label value SIZE / WEIGHT 49,5 (W) x 40,6 (D) x 17,8 (H) cm / 15.4 Kg label value I/O PORTS Unknown label value POWER SUPPLY Built-in power supply unit label value PERIPHERALS RAM and ROM modules, Peripherals I/O connector label value PRICE $2475 photos adverts links 915 title subtitle text image KEYBOARD /media/museum/photos/hp_9810_system_2.jpg title subtitle text image 1976 ADVERT for the 9815, 9835 and 9830 systems null title url text Complete information about the HP-9810 http://www.hpmuseum.org/hp9810.htm title url text HP Museum http://www.hpmuseum.net The best place about old HP computers and calculators. title url text Joe Rigdon pages http://www.classiccmp.org/hp/9800.htm More information about HP 98xx series title url text More details and pictures http://www.oldcalculatormuseum.com/hp9810a.html title url text My HP9810 repair job http://www.rheinfeld.de/andreas/9810.htm by Andreas Schumm /museum/hewlett-packard-hp-9816 /museum/hewlett-packard-hp-9825 /museum/hewlett-packard-hp-9826 /museum/hewlett-packard-hp-9830 /museum/hewlett-packard-hp-9836 938 url date https://web.archive.org/web/20230202005940/http://www.old-computers.com/museum/computer.asp?c=938 2023-02-02

The HP-9810 was the successor of the HP-9100. Although it kept software compatibility, its internal hardware organisation was completely different. The core memory was replaced with volatile MOS RAM chips and the display used the new technology of 7-segment light emitting diodes (LED) instead of cathode-ray tube.

Arithmetic routines were stored in ROM and user programs in RAM. Several RAM extensions, specialized ROM modules and peripherals (paper tape reader/puncher, line printer, measuring instruments) could be connected to the basic model.

The standard version of this calculator included a magnetic card reader located directly behind the two yellow keys at the top-right in the keyboard. While a thermal printer was available as an option, it could only print numeric characters unless you had the Alphanumeric Printer ROM. The add-on ROMs for this machine came in the form of a block that plugged into the left side of the keyboard; each had its own specialized keys. You can see the edges of the ROM block in the picture; the 3x5 array of keys at the leftmost area of the keyboard is its top. It was common to have more than one ROM extension available in a single block, since you could only plug in one at a time.

With this first generation of programmable calculators, engineers eventually became independant from main frames and computer centers. They could write programs, save, recall and print them off-line; and even easily carry the computer from a place to another... it was a true revolution at the time.

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.