Engineering:Sistema 700

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Sistema 700
ManufacturerPrológica
TypeMicrocomputer
Release date1981; 45 years ago (1981)
Introductory priceUS$399 (equivalent to $1,380 in 2024)
Discontinued1985; 41 years ago (1985)
Operating systemDOS-700 (CP/M 80)
CPU2x Zilog Z80A @ 4.0 MHz
Memory64 KiB RAM
StorageAudio cassette, Floppy disk
Display80 × 24 characters text display; 12-inch monochrome CRT; PAL-M video out (built-in RCA connector)
ConnectivityTwo RS-232 serial ports

Sistema 700 was a personal professional microcomputer, introduced by the Brazilian computer company Prológica in 1981.[1][2][3][4]

General information

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 5​1⁄4-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

The third generation Sistema 700, named Sistema 700 Modular

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]

Accessories

P-720 Printer.[16]

Bibliography

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

References

  1. ↑ 1.0 1.1 1.2 "Prológica em 7 anos vira a maior produtora de micros" (in pt-br). Jornal do Brasil: pp. 16. 1984-09-26. http://memoria.bn.br/pdf/030015/per030015_1984_00171.pdf. 
  2. ↑ CARDI, MARILZA CARDI (2002) (in pt-br). EVOLUÇÃO DA COMPUTAÇÃO NO BRASIL E SUA RELAÇÃO COM FATOS INTERNACIONAIS. FLORIANÓPOLIS, SC: Universidade Federal de Santa Catarina. https://core.ac.uk/download/pdf/30365442.pdf. 
  3. ↑ Velasco, Marcos. "Prológica Sistema 700" (in pt-br). https://www.velasco.com.br/index.php?item=prologicasistema700. 
  4. ↑ "História dos Computadores no Brasil" (in pt-br). http://ws2.din.uem.br/~museu/hist_nobrasil.htm. 
  5. ↑ "Prológica Sistema 700 – Revista Microsistemas – Anúncios Antigos" (in pt-BR). 2023-03-19. https://museucapixaba.com.br/memoria/anuncios-antigos/prologica-sistema-700-revista-microsistemas/. 
  6. ↑ "Intertec Superbrain Disks". https://datassette.org/softwares/us-estados-unidos-aplicativos-intertec-superbrain-softwares/intertec-superbrain-disks. 
  7. ↑ 7.0 7.1 7.2 7.3 (in pt-br) Manual do Sistema 700 Hardware. Prológica Microcomputadores. https://datassette.s3.us-west-004.backblazeb2.com/manuais/_sistema_700_manual_hardware.pdf. 
  8. ↑ "Microcomputador Sistema 700" (in pt-BR). 14 January 2016. https://sites.unoeste.br/museu/sistema-700/. 
  9. ↑ "Sistema 700 advert" (in pt-br). Micro Sistemas (8): 2. May 1982. https://ia601002.us.archive.org/20/items/microsistemas/MicroSistemas008.pdf. 
  10. ↑ "Quem somos - Linha do Tempo" (in pt-br). https://www.imediata.com.br/imediata/institucional.html. 
  11. ↑ "Microsoft Favored in Ruling". The New York Times: pp. Section D, Page 9. August 17, 1993. https://www.nytimes.com/1993/08/17/business/microsoft-favored-in-ruling.html. 
  12. ↑ Prológica (2020-08-25). "DOS700 - Sistema 700" (in pt-br). https://datassette.org/softwares/intertec-superbrain-programas-softwares/dos700-sistema-700. 
  13. ↑ "Está no mercado a terceira geración do sistema 700". Jornal do Dia (Cuiabá) VI (2414): pp. 2. 1986-02-16. https://memoria.bn.gov.br/DocReader/DocReader.aspx?bib=581577&pesq=%22Prol%C3%B3gica%22&pasta=ano%20198&hf=memoria.bn.gov.br&pagfis=13468. 
  14. ↑ "Microonda". Jornal do Brasil (Rio de Janeiro) XCV (56): pp. 15. 1985-06-03. https://memoria.bn.gov.br/DocReader/DocReader.aspx?bib=030015_10&Pesq=%22Prol%C3%B3gica%22&pagfis=146007. 
  15. ↑ "PERIFÉRICOS". Jornal do Commercio (Rio de Janeiro) 158 (250): pp. 12. 1985-08-05. https://memoria.bn.gov.br/DocReader/DocReader.aspx?bib=364568_17&Pesq=%22Prol%C3%B3gica%22&pagfis=49350. 
  16. ↑ "Adaptação para antiga impressora matricial Prologica P720XT para uso no PC com driver genérico somente texto" (in pt-BR). 2014-05-21. https://robsoneletronico.wordpress.com/2014/05/21/adaptacao-para-antiga-impressora-matricial-prologica-p720xt-para-uso-no-pc-com-driver-generico-somente-texto/. 

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