Apple IIc - Technical Specifications

Technical Specifications

• Microprocessor
  • 65C02 running at 1.023 MHz
  • 8-bit data bus

• Memory
  • 128 KB RAM built-in
  • 32 KB ROM built-in (16 KB ROM in original)
• Expandable from 128 KB to 1 MB (only through non-conventional methods in original)

• Video
  • 40 and 80 columns text, with 24 lines
  • Low-Resolution: 40 × 48 (15 colors)
  • High-Resolution: 280 × 192 (6 colors)
  • Double-Low-Resolution: 80 × 48 (15 colors)
  • Double-High-Resolution: 560 × 192 (15 colors)

• Audio
  • Built-in speaker; 1-bit toggling
  • User adjustable volume (manual dial control)

• Built-in storage
• Slim-line internal 5.25-inch floppy drive (140 KB, single-sided)

• Internal connectors
  • Memory Expansion Card connector (34-pin)*

* Only available on ROM 3 motherboard and higher; original IIc: NONE

• Specialized chip controllers
  • IWM (Integrated Wozniak Machine) for floppy drives
  • Dual 6551 ACIA chips for serial I/O

• External connectors
  • Joystick/Mouse (DE-9)
  • Printer, serial-1 (DIN-5)
  • Modem, serial-2 (DIN-5)
  • Video Expansion Port (D-15)
  • Floppy drive SmartPort (D-19)
  • 12-Volt DC connector input (DIN-7, male)
  • NTSC composite video output (RCA connector)
  • Audio-out (⅛-inch mono phone jack)