Arche Technology (UK) Ltd has released a new A-4 notebook-sized portable computer: the Arche Messenger is built around the Intel 80386SX chip with a clock speed of 16MHz and runs under MS-DOS 4.01; it comes with a standard 1Mb of random access memory that is expandable to 5Mb, a 20Mb Winchester hard disk and a 3.5 1.44Mb floppy disk drive; the VGA screen is a backlit liquid crystal display with 16 grey scale levels, there are parallel and serial ports as well as sockets for an external VGA monitor and floppy disk; there is an 8-bit connector for proprietary internal cards and the Nottingham-based company intends to release an internal network card in the first quarter of next year; the NiCad powered Messenger 386SX costs UKP1,800 and weighs in at 6.6lbs; it measures 11 by 8.66 by 2.16.