Electronic computers

Computers, digital, analog or hybrid

Mainframe computers

Minicomputers

Personal computers (microcomputers)

Key-tape equipment, except drives

Paper tape (computer) equipment: punches, readers, etc.

Tape cleaners, magnetic: computer

Tape print units, computer

Disk and diskette equipment, except drives

Disk pack inspectors

Diskette or key-disk equipment

Keypunch equipment

Punch card equipment: readers, tabulators, sorters, etc.

Verifiers, punch card

Magnetic ink and optical scanning devices

Bar code (magnetic ink) printers

Magnetic ink recognition devices

Optical scanning devices

Readers, sorters, or inscribers, magnetic ink