Toshiba Pasopia 7
Toshiba Pasopia 7 (also known as PA7007) is a computer from manufacturer Toshiba, released in 1983 and only available in Japan. It was intended as the successor of the Toshiba Pasopia, offering improved sound and graphics. Graphic memory is increased to 48kb and two SN76489 sound chips are available, producing six five octave channels and two noise channels. 

The machine is partially compatible with the original Pasopia, and supports connecting cartridge-type peripherals.

A new version of the operating system - T-BASIC7,  is also available. 
This version is based on Microsoft BASIC and adds specific commands for this model, such as higher numerical precision or support for extra colors.

Available peripherals for this model are a 5" disk drive, a Chinese characters ROM, a RS-232 interface and a printer. The keyboard is a full-stroke keyboard, JIS standard with a separated numeric keypad and some function keys.

A latter model, Pasopia 700, is based on the Pasopia 7 and indented for a home learning system developed by Toshiba and Obunsha.
Two disk-drives were added to the side of the main unit and the keyboard was separate. This machine was two cartridge slots (one at the front).

Color palette 
The Pasopia 7 uses hardware dithering to simulate intermediate color intensities, based on a mix of the full intensity RGB primaries. This allows the machine to display 27 colors (3-level RGB).

See also 
 Toshiba Pasopia 
 Toshiba Pasopia 5
 Toshiba Pasopia IQ
 Toshiba Pasopia 16

References 

Pasopia
Z80-based home computers
Computer-related introductions in 1983