Servicing Personal Computers, 3rd Edition

Reference section

Contents

Commonly used symbols 288

TTL families and device numbering 289

Common TTL pin-outs 294

Equivalent logic functions 299

RAM data 300

Dynamic RAM equivalents 301

Small computer systems interface (SCSI) 301

The IEE-488 interface standard 302

287

288 Servicing Personal Computers

Commonly used component symbols

Symbol

Component

-O or -^ΛΑ-

-^Λ-

H H or -WS—

-I r- or -νΛΛΑ-

—TOI—

-w-

-w-

<

->-

=D-

—1>—

-®

-0-

-l·

il·

=&-

il·

-0-

Fixed resistor

Preset resistor

Preset potentiometer

Variable potentiometer

Fixed capacitor

Preset capacito ...