The Acorn Electron is a cheaper version of the BBC Micro, also manufactured by Acorn Computers.
One of the methods to reduce the price of the Acorn was to increase the integration of components through a specialized circuit and to simplify the motherboard.
Out went the BBC’s 6845 video controller, memory controller, serial I/O control and timer chips. They were all replicated to a greater or lesser extent by the ULA's (Uncomitted Logic Array) all-in-one circuitry.
The computer was able to download and save programs to an audio cassette recorder using a standard cable.