---
title: Kemitron Naja
categories:
- Computers
types:
- Professional Computer
origins:
- Brazil
years:
- '1984'
cpus:
- Z80A
params:
  name: Naja
  image: /media/museum/photos/kemitron_naja_1.jpg
  company: /companies/kemitron
  company_name: Kemitron
  specs:
  - label: NAME
    value: Naja
  - label: MANUFACTURER
    value: Kemitron
  - label: TYPE
    value: Professional Computer
  - label: ORIGIN
    value: Brazil
  - label: YEAR
    value: ? 1984
  - label: BUILT IN LANGUAGE
    value: Basic Level II
  - label: KEYBOARD
    value: QWERTY keyboard with numeric keyboard, 65 keys, auto-repeat, portuguese special characters
  - label: CPU
    value: Z80A
  - label: SPEED
    value: 2,1 Mhz / 3,6 Mhz (software switchable)
  - label: RAM
    value: 48 kb (up to 64k for CP/M)
  - label: ROM
    value: 16 kb
  - label: TEXT MODES
    value: 16 x 32, 16 x 64
  - label: GRAPHIC MODES
    value: 192 x 64, 256 x 192
  - label: COLORS
    value: Monochrome built-in monitor
  - label: SOUND
    value: Beeper
  - label: I/O PORTS
    value: Parallel port, 6 expansion slots, tape interface (500 and 1500 bauds), video output
  - label: BUILT IN MEDIA
    value: Up to four optional 5''1/4 disk-drives (163 kb)
  - label: OS
    value: NajaDOS (NewDOS 80), CP/M optional
  - label: POWER SUPPLY
    value: Built-in PSU
  - label: PERIPHERALS
    value: 12'' monochrome monitor (green), 4 disk-drives interface, 4Mhz addon
  comments:
  - author: Cristiano (Brazil)
    date: Tuesday 9th December 2014
    text: This response might be a little late but yes, it is hardware-compatible with the TRS-80. I used to use authentic Radio Shack 5 1/4"disk drives connected to a Naja. I don''t remember if it needed an add-on board$ probably it did, though.
  - author: Umberto (Brasil)
    date: Monday 27th May 2013
    text: I have one model of this, an I would like to know if this model is compatible in hardware with the TRS, I mean the disk drive.
  oc_id: 536
  source:
    url: https://web.archive.org/web/20230606202438/http://www.old-computers.com/museum/computer.asp?c=536
    date: '2023-06-06'
---

This is a brasilian [Tandy TRS-80 Model III](/museum/tandy-radio-shack-trs-80-model-iii/) compatible system.

It didn't sell well as the CP-500 was a too popular TRS-80 compatible system in Brazil.

In 1985, a new model named **Naja 800** was marketed. It had a 14 Kb EPROM, 128 Kb RAM, built-in monitor, 70 keys keyboard with numeric keypad and a hard-disk.

**Sources :**\
[Computadores Brasileiros](http://pagina.de/brcomp)\
[Clube Old Bits](http://orbita.starmedia.com/~cobit/)