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macintosh plus


Minimum OS: System 3.0

Maximum OS: 7.5.5

Introduced: January 1986

Terminated: October 1990


Processor

CPU: Motorola MC68000

CPU Speed: 8 MHz

FPU: none

Bus Speed: 8 MHz

Register Width: 32-bit

Data Bus Width: 16-bit

Address Bus Width: 32-bit

ROM: 128 kB

RAM Type: 30 pin SIMM

Minimum RAM Speed: 150 ns

Onboard RAM: 0 MB

RAM slots: 4

Maximum RAM: 4 MB


Video

Monitor: 9" built-in

Max Resolution: 1 bit 512x342


Storage

Floppy Drive: 3.5" 800 kB


Input/Output

Floppy: DB-19

Joystick/Mouse: DE-9

Serial: 2 DE-9

SCSI: DB-25

Audio Out: 8-bit mono mini

Speaker: 8-bit mono

macintosh plus


The mac plus was the answer to complaints that the original Mac was not expandable. It doubled the ROM of the 512k from 64k to 128k, and increased the RAM to 1 MB (expandable to 4 MB). It was the first mac to include a SCSI port, allowing for a variety of external peripherals, and was the first mac to use the now familiar platinum case color (although it initially shipped in beige).