Beti George yn holi Trefor Davies, entrepreneur cyfrifiadurol o Lincoln. Beti George chats to Trefor Davies, a computer and silicon chip expert from Lincoln. Show more
Discover 11,128,835 listings and 282,350 playable programmes from the BBC
Beti George yn holi Trefor Davies, entrepreneur cyfrifiadurol o Lincoln. Beti George chats to Trefor Davies, a computer and silicon chip expert from Lincoln. Show more