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Apple I

1976–1977 · board

Specifications

Cpu
MOS Technology 6502 at 1 MHz (8-bit)
Ram
max: 48 KB via expansion connector · base: 4 KB (expandable to 8 KB on board)
Ports
Composite video out · ASCII keyboard input header · Cassette interface connector (optional card) · 44-pin expansion edge connector
Display
Composite video terminal on board: 40x24 characters of text, driving a standard TV or monitor
Storage
base: None built in; program entry via keyboard, optional cassette interface for load/save · options: Apple Cassette Interface (ACI) expansion card
Os Support
latest: Integer BASIC loaded from cassette · shipped: Apple 1 Machine Language Monitor (Woz Monitor) in ROM
Release Price
$666.66

Upgrade paths

RAM
Up to 48 KB via the expansion connector · Shipped with 4 KB, socketed for 8 KB on board; further RAM added through the edge connector.
MODERATE
storage
Cassette load/save via the Apple Cassette Interface · The ACI card was sold separately so programs did not have to be typed in by hand each session.
MODERATE