BBCArchive Twitter account featured this clip on the BBC Micro connecting via Teletext and acoustic modem to the outside world.
https://twitter.com/BBCArchive/status/1466059525958553601
#OnThisDay 1981: The BBC Micro computer was launched. Watch the machine become a piano, and go online… 80s-style.
One of many emulators for the RE-LAUNCH of the BBC MICRO. http://www.mkw.me.uk/beebem/index.html
Here’s another one:
As explained in this Blog post:
VirtualBeeb is an interactive 3D model of the BBC Micro (1981) on the web! Experience the sights and sounds of the machine that inspired a generation of British kids to code in the 80s at virtual.bbcmic.ro