The Psion MC (Mobile Computer) series is a line of laptop computers made by Psion PLC and launched in 1989.
History
Developed by Psion towards the end of the 1980s, informed by market research about the mobile computing needs of potential customers in the 1990s, the MC 400 was introduced in late 1989: an approximately A4-sized laptop or notebook computer featuring a full-size keyboard, monochrome liquid-crystal display and a multitasking, multi-window graphical user interface, providing a number of built-in applications in ROM. Instead of a mouse, the computer provided a touchpad to interact with the user interface. This was uncommon in 1989: the Gavilan SC was the only widely known model with a touchpad, and they were not used again until years later.
Alongside the MC 400, the lower-specification MC 200 and MS-DOS-compatible MC 600 were announced in late 1989, with the latter scheduled for a March or April 1990 launch. The MC 200 had a "half-size screen" with a resolution, thus maintaining the same pixel density as that on the MC 400, merely reducing its height, and halved the internal RAM from 256 KB to 128 KB. Such reductions in the specification led to a lower price of £545 plus VAT. Meanwhile, the MC 600 offered 768 KB of RAM (of which only 640 KB was accessible) and a 1 MB RAM drive (acting as "drive C") in order to offer a viable DOS experience and thus raising the price to £1,495 plus VAT, with the display on this model providing CGA-compatible graphics support at a resolution, albeit in monochrome. Unlike the other models, the touchpad was dropped from the MC 600, with a function key bar introduced in its place.
EPROM storage was used to hold the built-in applications, and data storage involved "matchbook-size" solid-state modules employing flash memory fitting into the four available slots present on the sides of the machine. Such modules were initially available in 128 KB, 256 KB and 512 KB capacities, with 1 MB modules anticipated in 1990, 2 MB in 1991, and as much as 8 MB envisaged by Psion. ROM-based modules were intended to provide additional software. An external 1.44 MB floppy disk drive was also announced, along with a fast serial link specifically for the MC 600 - Laplink - that permitted the MC to communicate with a personal computer and access its storage (and for the PC to access the MC's storage in a similar fashion). An external solid-state drive for up to four modules was also announced as a PC peripheral.
An optional "voice processor" was announced for the MC series, plugging into the expansion slot of the machine and offering voice recording and playback support, with the audio being compressed and stored on disk, achieving the storage of a claimed eight minutes of speech in only 64 KB. The quality of the recorded speech was described euphemistically as "not brilliant", but "perfectly intelligible" and "quite adequate for note taking and interviewing".
The MC 400 was of the same generation as the Psion Series 3, and could be programmed using OPL much like the Series 3. Unlike the Series 3, the MC 400 has 4 bays for removable solid-state disk drives compared to 2 on Series 3 devices. The serial port also provides PC connectivity if used with the separately available PsiWin software using the lead designed for the Series 3 or 3A.
Reception
The newly developed EPOC16 (SIBO) operating system allowed hot swapping of the flash memory cards in the 4 memory slots, and with the two hardware expansion slots, the device seemed ready for all future developments. But it turned out differently. For one, the prices were quite high, with the MC200 at , MC400 at , and MC600 at , and the memory cards were very costly. Also, the software was not yet fully developed for market launch: the word processing was disappointing, the Open Programming Language (OPL) was adopted almost unchanged from the Organizer II and did not support the graphics abilities of the device, and professional developers had to wait over a year for the software development kit (SDK). The announced voice compression module was never finished, and apart from a parallel port, there were no hardware enhancements. Further, the press accused the device of incompatibility with the then standard IBM PC compatibles. Sales were weak, and SIBO Version 2, released in 1990 as a free update, changed nothing, although it came up with a Microsoft Word-like word processor and a significantly improved OPL version.