Image Credit:   Apple Inc.

Image Credit:   Apple Inc.

Introduced: April 1984 Terminated: August 1988

• Accumulator
• 2 index registers
• Stack pointer
• Processor status register

• ROM version '255' (original)
• ROM version '0'
  • Consisted of a chip swap and minor motherboard modification
  • Added support for UniDisk 3.5
  • Mini-Assember added
  • Monitor "Step" and "Trace" commands added
  • Rudimentary support for AppleTalk
• ROM version '3'
  • New motherboard
  • 34-pin socket added for plugging in a memory card up to 1 MB
  • AppleTalk support removed
  • Keyboard color changed from beige to platinum
• ROM version '4'
  • Better detection of installed RAM chips
  • Correction of a problem when using the serial modem port in terminal-mode
  • Bug fix for keyboard buffering

Image Credit:   Byte, May 1984

Image Credit:   Byte, May 1984

Image Credit:   Apple IIc Owner's Guide, Apple Inc., 1984

(Click) Apple IIc system overview (from Apple IIc Owner's Guide)

(Click) Apple IIc main unit (from Apple IIc Owner's Guide)

(Click) Apple IIc start up process (from Apple IIc Owner's Guide)

• ROM versions '255' (original) and '0': No RAM expansion slot, RAM expansion requires third-party solution
• ROM versions '3' and '4': 34-pin socket for installing up to 1 MB RAM

• Apple never officially supported RAM greater than 128K on ROM versions '255' and '0'

(Click) Apple IIc ports (from Apple IIc Brochure)

• Joystick/Mouse (DB-9)
• Printer, serial-1 (DIN-5)
• modem, serial-2 (DIN-5)
• Video expansion port (DB-15)
• Floppy drive port (DB-19)
• 12 Volt DC connector input (DIN-7, male)
• NTSC composite video output (RCA connector)
• Audio-out (1/8" mono phono jack)

1. 40-column text, 24 lines, 5 x 7 dot matrix (suitable for television or monitor)
2. 80-column text, 24 lines, 5 x 7 dot matrix (suitable for monitor only)

• Low-resolution 16-color graphics:
1. 40h x 48v color blocks
2. 40h x 40v with four lines of text
• High-resolution 6-color graphics:
1. 280h x 192v dots
2. 280h x 160v with four lines of text
• Double high-resolution 16-color graphics:
1. 560h x 192v dots

• All graphics modes may be displayed on a television or monitor
• Composite monitor or RF Modulator to TV supported
• Apple offered a standard 9" green monochrome monitor, and later, a larger composite color monitor. Apple also offered an expensive LCD flat panel monitor.

Apple IIc LCD flat panel monitor (from Apple IIc Owner's Guide)

Image Credit:   Byte, May 1984

• UniDisk 3.5 (Requires ROM versions '0', '3', or '4')
• Apple 5.25 Drive

• ROM version '255' only supports a single external 5.25-inch drive
• ROM versions '0', '3', and '4' support UniDisk 3.5 drive in addition to an external 5.25-inch drive

• 5.25-inch floppy disk drive

Image Credit:   Apple IIc Owner's Guide

Image Credit:   Apple IIc Owner's Guide

Image Credit:   Apple IIc Owner's Guide

Image Credit:   Byte, May 1984

• 63-key full-size keyboard
• Full 128-character ASCII including 96 uppercase and lowercase alphanumeric characters, and 32 control characters
• Special-purpose keys: Shift, Caps Lock, Control, Escape, Return, Tab, Delete, up arrow, down arrow, left arrow, right arrow, Reset, Open Apple, Solid Apple
• Keyboard is switchable between Standard (QWERTY) and Dvorak layouts
• Includes speaker-volume control

(Click) Apple Dealer Spec Sheets

Comments
The IIc was for all practical purposes the same as the Apple IIe but with two significant differences, it was compact and luggable, and it was not expandable. It had built-in serial ports, a built-in external disk drive port, and even a 15-pin video port that could be used to add special monitors like Apple's IIc LCD monitor. The IIc had a built-in 5.25" disk drive and 128K onboard RAM. Early versions could not be expanded past 128K RAM without a third-party solution, but later versions had a 34-pin socket for expanding memory up to 1 MB.