Epson HX 20 eerste laptop computer

Specificaties:

CPU AND MEMORY
Main CPU: CMOS 8-bit microprocessor 6301, 614 kHz clockrate
Slave CPU: CMOS 8-bit microprocessor 6301, 614 kHz clockrate
RAM: 16kB (standard) expandable to 32kB with expansion unit
ROM: 32kB (standard) expandable to 40kB internally to 72kB with expansion unit
BUILT-IN PERHIPALS
Display: Liquid crystal screen; 120 x 32 dot-matrix; 20 x 4 character display: 5 X 7 font; virtual addressable area 255 columns by 255 lines (if sufficient memory is available)
Printer: 24-column dot-matrix impact microprinter; print rate 42 lines per minute; bit addressable graphics: full ASCII upper and lower case character set; cartridge ribbon
Microcassette: Uses standard microcassette tapes
Clock/Calender: Time and calendar built in CMOS battery backup
Music Generator: Programmable pulse drive, four octaves with halftones
COMMUNICATIONS
RS-232C: Full/half duplex, 110 to 4800 BPS, 8-pin connector
Serial: Full/half duplex, 38.4K BPS, RS-232C level, 5-pin DIN Connector
PERHIPAL INTERFACES
Bar Code Reader: Special connecton requires optional software
External cassette: Standard audio cassette interface
System Bus: 16-bit address bus; 8-bit data bus and control lines, 40 pin connector
ROM Cartridge / Microcassette Interface: I/O port with 3 input, 6 output line
Inclusief programma: Intext, wiskunde, agenda fax en textfiles.
Power A-C adapter