Editing Acorn Electron (section)

== Keyboard, sound and cassette ==

The keyboard is a 56-key full-travel QWERTY assembly with two-key rollover, auto-repeat, and ten function keys; it is scanned directly by the ULA, and the machine will not run with the keyboard disconnected.<ref name="sm" /> Sound is a single channel with envelope control over seven octaves through the internal speaker, with software emulation of a noise channel. The cassette interface runs at 1200&nbsp;baud (CUTS) through a 7-pin DIN with automatic recorder motor control.<ref name="wp" /><ref name="sm" />