Stefan Schäfer:
Calculating machine, National Museum of Computing, Bletchley Park
Stefan Schäfer:
Calculating machine, National Museum of Computing, Bletchley Park
Stefan Schäfer:
Calculating machine, National Museum of Computing, Bletchley Park
Stefan Schäfer:
Calculating machine, National Museum of Computing, Bletchley Park
Stefan Schäfer:
Calculating machine, National Museum of Computing, Bletchley Park
Stefan Schäfer:
Burroughs' computer, National Museum of Computing, Bletchley Park
Stefan Schäfer:
Card punch, National Museum of Computing, Bletchley Park
Stefan Schäfer:
Card punch, National Museum of Computing, Bletchley Park