My third computer was a BBC B (the first two being a ZX Spectrum 48k and then a ZX Spectrum 128k). The BBC B computer was made by Acorn and when you turned it on booted straight in to BASIC which encouraged kids to learn programming.
10 PRINT "HELLO"
20 GOTO 10
The BBC B was the universal choice of computer for most schools across the UK for a good number of years and I believe some schools still use them now to teach programming and control.