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Macintosh Classic Technical
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1990-10-18
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Macintosh Classic Technical Specifications
Copyright 1990, Apple Computer, Inc.
Two configurations of the Macintosh Classic are available. The Macintosh
Classic comes with 1 megabyte of RAM, internal 1.4-megabyte Apple SuperDrive
floppy disk drive, ADB keyboard and mouse, system software, and training disk.
The Macintosh Classic 2/40 comes with 2 megabytes of RAM, internal 40-megabyte
hard disk drive, internal 1.4-megabyte hard disk drive, internal 1.4-megabyte
Apple SuperDrive floppy disk drive, ADB keyboard and mouse, system software,
and training disk.
The Macintosh with 1 megabyte of RAM can be expanded to 2 megabytes by adding
the Macintosh Classic Memory Expansion Card. The 2-megabyte Macintosh Classic
can be expanded to 4 megabytes by installing Single In-line Memory Modules
(SIMMs).
The SCSI (Small Computer System Interface) port is a bus that used to connect
hard disks and other SCSI-based devices to the Macintosh Classic. It can
support up to seven SCSI peripheral devices (six if you have an internal hard
disk).
The Macintosh Classic provides full ROM support for all AppleTalk protocols and
includes built-in serial ports for Local-Talk network connections.
Macintosh system software includes:
-- System software version 6.0.6 or later (the Macintosh Operating System)
with System Startup disk.
-- System Additions disk (includes utilities such as the Apple File Exchange,
HD SC Setup, CloseView, Disk First Aid, and Font/DA Mover).
HyperCard 2.0 software is included with the Macintosh Classic.
Microprocessor
-- MC68000, 32-bit architecture
-- 7.8336-megahertz clock speed
Memory
-- 1 or 2 megabytes of RAM, expandable to 4 megabytes
-- 512K of ROM
-- 256 bytes of parameter memory
Disk Drives
-- Built-in Apple SuperDrive 1.4-megabyte floppy disk drive (optional external
1.4-megabyte or 800K disk drive available)
-- Optional internal 40-megabyte Apple SCSI hard disk drive
-- Optional external Apple SCSI hard disk (many capacities available)
Monitor
-- Built-in 9-inch diagonal, high-resolution (512- by 342-pixel) bit-mapped
monochrome display
Interfaces
-- One Apple Desktop Bus (ADB) port, supporting a keyboard, mouse, and other
devices daisy-chained through a low-speed, synchronous serial bus (a maximum of
three chained devices is recommended)
-- Two serial (RS-232/RS-422) ports, 230 kilobits per second maximum (up to
0.920 megabits per second if clocked externally)
-- SCSI interface, using a 50-pin internal connector for the first external
device; all subsequent SCSI-base peripherals use standard SCSI-to-SCSI
interface cables.
-- 3.5-inch external floppy disk drive (800K or 1.4-megabyte) interface
-- Sound port for external audio amplifier or headphones
Keyboard
-- ADB keyboard with numeric keypad
-- Two-level tilt adjustment
Mouse
-- Apple Desktop Bus Mouse; mechanical tracking; optical shaft or contact
encoding; 100 + or - 10 pulses per in. (3.9 + or - 0.39 pulses per mm) of
travel
Sound Generator
-- Four-voice sound with 8-bit digital-analog conversion using 22-kilohertz
sample rate - capable of driving stereo headphones or other stereo equipment
through the sound jack
Clock/Calendar
-- CMOS custom chip with long-life lithium battery
Fan
-- 10 cu. ft./min. axial
-- Positive pressure cooling
Electrical Requirements
-- Line voltage: 120 volts AC, RMS (nominal)
-- Frequency: 47 to 63 hertz, single phase
-- Power: 100 watts maximum
ADB Power Requirements
-- Maximum power draw for all ADB devices: 500 milliamps (a maximum of three
ADB devices, daisy-chained to the port, is recommended)
-- Mouse draws 80 milliamps.
-- Keyboard draws 25 milliamps.
Main Unit Size and Weight
-- Height: 13.2 in. (33.6 cm)
-- Width: 9.7 in. (24.6 cm)
-- Depth: 11.2 in. (28.5 cm)
-- Weight: 16 to 17.1 lb. (7.3 to 7.8 kg)
Mouse Size and Weight
-- Height: 1.1 in. (2.8 cm)
-- Width: 2.1 in. (5.3 cm)
-- Depth: 3.8 in. (9.7 cm)
-- Weight: 6 oz. (.17 kg)
Keyboard Size and Weight
-- Height: 1.3 in. (3.3 cm)
-- Width: 16.0 in. (40.5 cm)
-- Depth: 5.9 in. (15.1 cm)
-- Weight: 1.96 lb. (.89 kg)
Operating Environment
-- Operating temperature: 50 to 104 degrees F (10 to 40 degrees C)
-- Storage temperature: -40 to 116.6 degrees F (-40 to 47 degrees C)
-- Relative humidity: 5% to 95% noncondensing
-- Maximum altitude: 15,000 ft. (4,722 m)
Macintosh Classic Order Number M0421LL/A
Macintosh Classic 2/40 Order Number M0435LL/A
New Prod Highlights
10-15-90