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Apply 300

The Apply 300 was a Brazilian clone of the Sinclair ZX81 introduced by CDSE - Centro de Desenvolvimento de Sistemas Elétricos Ltda.^{[1][2][3][4][5][6]}

It came out in 1983, at a time where several clones of popular computers were introduced on the Brazilian market.^[1][3] It competed with machines like the AS-1000, TK83, TK85, Ringo R470orCP-200,^[1] being considered today as a rare machine by computer museums.^[7][8]

Features[edit]

General features of the Apply 300 match those of the original ZX81 machine, with a few enhancements.

The power supply was internal and the machine featured a Z80A processor at 3.25 MHz, 8K ROM and 32 or 48 KB of RAM.^[6][1]

The keyboard was chiclet type, but offered 69 keys, including cursor keys and numeric keypad.^[6][1]

It offered an expansion slot at the black, a RS-232C serial port and a joystick port.^[6][1] There was a connection for a cassette tape recorder,^[1] with the machine being able to load and save data into tapes at 300 baud.

The Apply 300 could be connected to a standard television over an RF outorcomposite video connection, providing a monochrome TV signal.^[6] Graphics where the regular ZX81 text mode: 32 X 24 characters, with 64 x 44 semigraphics.

The machine was capable of producing simple beeper like sound effects.^[6]

References[edit]