home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
BBS in a Box 5
/
BBS in a Box -Volume V (BBS in a Box) (April 1992).iso
/
Files
/
Word
/
O-P
/
OctMacReleases.cpt
/
Macintosh LC Technical
< prev
Wrap
Text File
|
1990-10-18
|
5KB
|
186 lines
Macintosh LC Technical Specifications
Copyright 1990, Apple Computer, Inc.
The Macintosh LC comes with 2 megabytes of RAM (expandable to 10 megabytes),
internal 1.4-megabyte Apple SuperDrive floppy disk drive, internal 40-megabyte
hard disk drive, ADB keyboard and mouse, system software, and training disk.
The Macintosh LC comes with 2 megabytes of RAM on the main logic board. Up to
8 megabytes of RAM can be added by installing a memory expansion card and then
adding SIMMs. Some possible configurations include:
-- 4 megabytes (2 megabytes on main logic board; two 1-megabyte SIMMs)
-- 10 megabytes (2 megabytes on main logic board; two 4-megabyte SIMMs)
The SCSI (Small Computer System Interface) bus can support up to seven
peripheral devices.
The Macintosh LC provides full ROM support for all AppleTalk protocols and
includes built-in serial ports for LocalTalk 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)
The Macintosh LC accepts and processes sound, and generates sound. Using a
microphone or phono jack adapter, and appropriate software, you can speak into
the computer to create electronic voice messages and add voice comments to
files. Sound entering the computer is filtered through a custom
filter/preamplifier chip, converted to digital form, and stored in DRAM or
directly on the hard disk. The sound generator is a sampling generator that
provides the sound signal to the internal speaker to both channels of stereo
mini-phone-jack headphones.
Microprocessor
-- MC68020, 32-bit architecture
-- 16-megahertz clock speed
Memory
-- 2 megabytes of RAM, expandable to 4 or 10 megabytes
-- 512K of ROM, socketed for future ROM upgrades
-- 265 bytes of parameter memory
Disk Drives
-- Built-in Apple SuperDrive 1.4-megabyte floppy disk drive
-- Internal 40-megabyte Apple SCSI hard disk drive
-- Optional external Apple SCSI hard disk (many capacities available)
Monitors
-- Supports several color and monochrome monitors, including: Macintosh 12"
RGB Display, Macintosh 12" Monochrome Display, and AppleColor High-Resolution
RGB Monitor.
-- When equipped with a video expansion card, supports other Apple and
non-Apple monitors; see your authorized Apple dealer for details.
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 daisy-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)
-- Video port, supporting color and monochrome monitors of various sizes and
resolutions
-- SCSI interface, using a 50-pin internal connector and a DB-25 connector for
the first external device; all subsequent SCSI-based peripheral devices use
standard SCSI-to-SCSI interface cables.
-- Internal expansion slot, supporting an 020 Direct Slot expansion card
-- Monophonic sound output port for external audio devices
-- Sound input port for monaural sound input
Sound Input
-- Monaural 8-bit sound
-- Sound samples can be made at 22 or 11 kilohertz.
-- Macintosh Audio Compression Expansion (MACE) sound utility, supporting 3:1
or 6:1 compression, which allows approximately half an hour of sound to be
stored on a single 40-megabyte hard disk
Sound Generator
-- Monophonic 8-bit digital-analog conversion using 22-kilohertz sample rate -
capable of supplying the same signal to both channels of stereo headphones or
other stereo equipment through the sound jack
Microphone
-- "Hands free" omnidirectional electret microphone
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
Electrical Requirements
-- Line voltage: 90 to 240 volts AC, RMS
-- Frequency: 47 to 63 hertz, single phase
-- Power: 50 watts maximum, not including monitor power
ADB Power Requirements
-- Maximum power draw for all ADB devices: 200 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: 3.0 in. (7.7 cm)
-- Width: 12.2 in. (31.0 cm)
-- Depth: 15.0 in. (38.2 cm)
-- Weight: 8.8 lb (4.0 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: 1.8 in. (4.4 cm)
-- Width: 16.5 in. (41.8 cm)
-- Depth: 5.6 in. (14.2 cm)
-- Weight: 2 lb. (1 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: 20% to 80%, noncondensing
-- Maximum altitude: 10,000 ft. (3,048 m)
Order Number M0442LL/A
New Prod Highlights
10-15-90