Specifications

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CHAPTER 1

Introduction

Summary of Features

The Macintosh LC 520 computer is an integrated Macintosh computer with a built-in

color display. It is a larger version of the Macintosh Color Classic

with many of the

performance features of the Macintosh LC III.

This chapter outlines the main features of the Macintosh LC 520 computer and describes

its appearance and external features.

Summary of Features 1

Here is a summary of the hardware features of the Macintosh LC 520 computer

(individual features are described in the sections that follow):

■

integrated design with built-in 14-inch Trinitron color display

■

Motorola MC68030 microprocessor running at 25 MHz

■

built-in video hardware using separate video RAM

■

installed RAM capacity of 4 MB, expandable to 36 MB

■

1 MB ROM in sockets; optional expansion to 2 MB

■

internal hard disk with 40 MB, 80 MB, or 160 MB capacity, using the internal SCSI

connector; external SCSI port for additional SCSI devices

■

provision for an internal CD-ROM drive or other 5.25-inch storage device

■

internal Apple SuperDrive high-density ﬂoppy disk drive with 1.4 MB capacity

■

standard Macintosh I/O ports: two ADB ports, two serial ports, sound input and

output jacks, and a SCSI port

■

built-in microphone

■

front-panel headphone jack and internal stereo speakers

■

114-pin processor-direct slot (PDS) for hardware expansion (like the PDS on the

Macintosh LC III, and compatible with the 96-pin PDS on the Macintosh Color Classic

and the Macintosh LC II)

■

power on and off from the keyboard

■

pushbuttons on the front panel to control sound volume and display intensity

■

power saver mode to allow software to turn off the display monitor when the machine

is unused for a set period of time

Comparison With the Macintosh Color Classic 1

Here is a summary of features of the Macintosh LC 520 that are different from those of

the Macintosh Color Classic:

■

larger 14-inch Trinitron color display

■

microprocessor running at 25 MHz instead of 16 MHz; data bus 32 bits wide instead of

16 bits.