Elwro 800 Junior was released in three different versions:
Elwro 800, the student version had no disk controller,
Elwro 800-2, the teacher version had a disk controller,
Elwro 800-3 was a off-line version students or teachers could use.
In 1990, a Junior 804 prototype was built. It had a built-in 3.5 floppy disc drive and looked like a Commodore 128.
Lenguajes Sinclair Basic
Teclado Full stroke 75 key with 5 function Teclas and arrow Teclas
CPU Zilog Z80 A
Velocidad 3.5 MHz
RAM 64 KB
ROM 24 KB (Basic & OS)
Modos de Texto 32 or 64 chars. x 24 lines
Modo gráfico 256 x 192 dots
Colores 8 with two tones each (normal and bright)
Sonido 1 voice / 10 octaves (Beeper)
Puertos de entrada/salida tape recorder, TV/RF modulator, video RGB, video mono, joystick (mouse, light pen), Parallel Centronics, serial RS-232C, FDD (in 800-3)
OS CP/J, CP/M 2.2
Fuente de alimentación Built-in Fuente de alimentación unit
Perifericos Floppy disc unit