The Bell Punch Company was a British company manufacturing a variety of business machines, most notably several generations of public transport ticket machines and the world's first desktop electronic calculator, the Sumlock ANITA.
The Bell Punch Company was a British company manufacturing a variety of business machines, most notably several generations of public transport ticket machines and the world's first desktop electronic calculator, the Sumlock ANITA. (en)
The Bell Punch Company was a British company manufacturing a variety of business machines, most notably several generations of public transport ticket machines and the world's first desktop electronic calculator, the Sumlock ANITA. (en)