Sistema 700
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 | |
| Manufacturer | Prológica |
|---|---|
| Type | Microcomputer |
| Released | 1981 |
| Introductory price | US$399 (equivalent to $1,380 in 2024) |
| Discontinued | 1985 |
| Operating system | DOS-700 (CP/M 80) |
| CPU | 2x Zilog Z80A @ 4.0 MHz |
| Memory | 64 KiB RAM |
| Storage | Audio cassette, Floppy disk |
| Display | 80 × 24 characters text display; 12-inch monochrome CRT; PAL-M video out (built-in RCA connector) |
| Connectivity | Two RS-232 serial ports |
Sistema 700 was a personal professional microcomputer, introduced by the Brazilian computer company Prológica in 1981.[1][2][3][4]
The machine was based on the Intertec Superbrain and had similar characteristics:[5][6] based on the Zilog Z80A 8-bit, 4MHz microprocessor, it had 64 KiB RAM configuration and two 51⁄4-inch floppy disk drives with capacity for up to 320 KiB of storage.[7][8][9][10]
Its operating system was DOS-700, a version adapted by Prologica's software engineering department from the CP/M-80.[11][12]
It achieved relative commercial success in financial, database and engineering applications. Due to the compatibility with the popular CP/M system, various applications like Fortran ANS, BASIC compiler, COBOL ANSI 74 compiler, Algol, Pascal, PL/I, MUMPS/M, RPG, Faturol C could be used. Other applications like word processors (WordStar), spreadsheets (CalcStar) and databases (DataStar and dBase II) were also compatible. Your applications could be programmed in BASIC, Cobol-80 and Fortran.[7]
Models
Sistema 700 (1981)
Initial model announced in 1981, but never went into production (vaporware).[1]
Super Sistema 700 (1981)
Final version with graphite-colored cabinet and rounded contours.[1]
Sistema 700 Modular (1985)
In August 1985, Prológica released the third generation of the Sistema 700, named the Sistema 700 Modular. It had a larger and more durable keyboard, a built-in magnetic disk, and 10 function keys . It had 64 kilobytes of RAM and 4 kilobytes of EPROM storage. It was equipped with three microprocessors, one of which, an Intel 8035, was dedicated to controlling the keyboard. It was 10% cheaper than the previous model.[13][14][15]
Data Storage
Data storage was done in audio cassette.[7] Audio cables were supplied with the computer for connection with a regular tape recorder.[7]
