Sistema 700

Sistema 700 was a personal professional microcomputer, produced by a Brazilian computer company in early 1980s.[1][2]

Sistema 700
ManufacturerPrológica
TypeMicrocomputer
Release date1981 (1981)
Introductory priceUS$399 (equivalent to $1,189 in 2021)
Discontinued1985 (1985)
Operating systemDOS-700
CPU2x Zilog Z80A @ 4.0 MHz
Memory64 KiB RAM
StorageAudio cassette, Floppy disk
DisplayPAL video out (built-in RCA connector)

General information

Based on the Zilog Z80A 8-bit, 4MHz microprocessor, it had 64 KiB RAM configuration and two 5-1/4" floppy disk drives with capacity for up to 320 KiB of storage.[3]

Its operating system was DOS-700, a version adapted by Prologica's software engineering department from the CP/M-80.[4]

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.[3]

Models

Initial model announced in 1981, but never went into production.[1]

  • Super Sistema 700 (1981)

Final version with graphite-colored cabinet and rounded contours.[1]

Data Storage

Data storage was done in audio cassette.[3]

Audio cables were supplied with the computer for connection with a regular tape recorder.[3]

Accessories

P-720 Printer.[5]

Bibliography
  • Micro Computador - Curso Básico. Rio de Janeiro: Rio Gráfica, 1984, v. 1, pp. 49–50.

References
  1. Jornal do Brasil (1984-09-26). "Prológica em 7 anos vira a maior produtora de micros" (PDF) (in Portuguese). Retrieved 2021-09-23.
  2. Marilza de Lourdes Cardi (2002-01-01). "Evolução da Computação no Brasil e sua Relação Com Fatos Internacionais" (PDF) (in Portuguese). Retrieved 2021-09-23.
  3. Editele. "Sistema 700 Manual Hardware" (PDF) (in Portuguese). Retrieved 2021-09-24.
  4. "Microsoft Favored in Ruling". Archived from the original on 2018-01-18. Retrieved 2021-09-24.
  5. Prológica (1985-07-05). "Geração Prológica" (PDF) (in Portuguese). Retrieved 2021-09-23.
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