2017年6月12日 · For fast storage and retrieval, a two-track tape cartrdige drive has been built into the 9831A. The storage medium, a high-density, rapid-access tape cartridge, records up to 250k bytes of information and also features automatic verification of data. The 9831A comes standard with 7,162 bytes of read/write memory and is expandable to 31,738 bytes.

The 9831A was one of the rarest computers ever made by HP. The 9831A was a very interesting computer. It was a replacement for the 9830. It had the same firmware and spoke the same version of BASIC as the 9830. But, it used the same hardware I/O, interface options and form factor as the 9825.

The museum of HP computers is a collection of HP computing products introduced between 1966 and 1991. The museum contains: calculators, desktop computers, computer systems, tape drives, disc drives, plotters, printers, digitizers and other hardware as well as software, documentation and promotional materials.

HP 9830A, introduced in 1972, was the top of the 9800 line, with the addition of a BASIC interpreter in read-only memory (ROM). HP itself referred to it as a "calculator". [4] All 98x0 and 9821 systems used the same I/O interfaces. [5] . A 400 line per minute 80-column thermal line printer was designed to fit on top of the 9820 and 9830. [6]

Re: HP 9831 Message #3 Posted by Eric Smith on 2 July 2005, 1:46 p.m., in response to message #2 by Tony Duell. So will the 9831A system ROM cartridge work in a 9825A, or vice versa?

MAME records for , Manuals, ROM information

The new 26-pound HP 9831A desktop computer can be used as a stand-alone, Basic-language computer or linked with peripherals to form systems, according to its ma

HP called the HP 9845 the flagship of the 9800 series. That's an appropriate term considering the size and weight of one! The 9845 A was introduced in the April 1978 issue of the HP Journal .

The museum of HP computers is a collection of HP computing products introduced between 1966 and 1991. The museum contains: calculators, desktop computers, computer systems, tape drives, disc drives, plotters, printers, digitizers and other hardware as well as software, documentation and promotional materials.

LE HP 9831A est la version de base du HP 9825A qui utilise HPL comme langage de programmation. Le HP 9831A utilise le même dialekt de base que le HP 9830A et était destiné à remplacer ce type. Très peu d'exemplaires du HP 9831A ont été réalisés et encore moins ont résisté à l'épreuve du temps, ce qui en fait un type très rare et recherché.