The HP-75C and HP-75D were hand-held computers programmable in BASIC, made by Hewlett-Packard from 1982 to 1986.

The HP-75C was HP's first portable computer. It ran BASIC, and came with 16K of RAM with an expansion port for additional RAM and 48K of ROM with 3 ROM expansion ports. It had a keyboard that was large enough to touch type on (about 95% of full size), a very readable one-line alpha display and an HP-IL port that allowed it to be attached to ...

2021年4月13日 · The HP-75C/D is a scale down version of the HP-85 desktop computer (CMOS version of the same 8 bits CPU) and uses a BASIC language dialect that is similar to the 80 series. This portable computer shines when used with the VisiCalc module, a 80 columns video interface, a 80 column printer and a floppy drive.

The Hewlett-Packard-75C was Hewlett-Packard's first handheld computer. Take a virtual tour of this product, see close-up images and read about its history.

2022年6月28日 · HP-75C 是惠普的第一台便携式计算机。 它运行 BASIC，配备 16K 的 RAM 和一个用于额外 RAM 的 扩展端口 和 48K 的 ROM 和 3 个 ROM 扩展端口。 它有一个大到可以打字的键盘（大约是全尺寸的 95%）、一个非常易读的单行 alpha 显示器和一个 HP-IL 端口，几乎可以连接到任何东西。 HP-75 文件系统允许将多个文件存储在 ROM、RAM、磁卡或 磁带驱动器 中。 包括所有基本文件系统命令，如复制和重命名。 除了 BASIC 之外，HP-75 还具有带ALARM的 …

By 1982, Hewlett-Packard had made dozens of calculators, even programmable calculators, but the HP-75C is their first handheld portable computer. It's not their first computer though, that would be the HP-85 from 1980, two years earlier. The BASIC programming language is built-in, as well as a clock and appointment alarm.

Introduced in 1982, the 10-inch by 5-inch by 1-inch HP-75C was HP's first handheld computer. With 48K ROM and 16K RAM, the HP-75C ran BASIC and VisiCalc and could be used as a clock and appointment alarm.

The 75C was HP's first portable computer. The 75C was battery or AC powered with built-in BASIC language. It included a one-line LCD display and and HP-IL port for connecting to HP-IL disc drives, printers, plotters and tape drives. It came standard with 16K RAM, upgradable to 24K.

The HP-75C was the first pocket computer ever produced by HP who wanted a pocket book format for computer as powerful as a desktop. It can also be considered as the first organizer able to deal with multiple alarms, time schedule, real time control of peripheral devices and to memorize text files.

HP-75C and HP-75D The Hewlett-Packard HP-75 series of portable handheld computers were a miniaturized version of the HP-85 computer architecture. The HP-75 had a single-line 32-character LCD, 16kB of RAM (plus an optional HP 82700A 8kB expansion pack for 24kB total), 48kB of ROM, three slots for add-on ROM modules, an HP-IL interface, and a ...