Accounting machine

This article is about a class of small business-oriented machines in use from the early 1900s through the 1980s. For other uses, see Tabulating machines.

An accounting machine, or bookkeeping machine or recording-adder, was generally a calculator and printer combination tailored for a specific commercial activity such as billing, payroll, or ledger.^[1][2] Accounting machines were widespread from the early 1900s to 1980s,^[3] but were rendered obsolete by the availability of low-cost computers such as the IBM PC.

This type of machine is generally distinct from unit record equipment (some unit record tabulating machines were also called "accounting machines").

List of vendors/accounting machines

• Burroughs Corporation:
  • Burroughs Sensimatic^[4]
  • Burroughs Sensitronic
  • Burroughs B80
  • Burroughs E103^[5]
  • Burroughs Computer F2000^[4]
  • Burroughs L500
  • Burroughs E1400 Electronic Computing/Accounting Machine with Magnetic Striped Ledger^[6]
• Dalton Adding Machine Company^[2]
• Electronics Corporation of America:
  • Magnefile-B^[7]
  • Magnefile-D^[7]
• Elliott-Fisher^[2]
• Federal Adding Machines^[2]
• IBM:
  • IBM 632
  • IBM 858 Cardatype Accounting Machine ^[8]
  • IBM 6400 Series
• Laboratory for Electronics:
  • The Inventory Machine II (TIM-II)^[7]
• Monroe Calculator Company:
  • Model 200
  • Synchro-Monroe President^[4]
  • Monrobot IX^[4]
• NCR Corporation:
  • Post-Tronic Bookkeeping Machine - Class 29^[4]
  • Compu-Tronic Accounting Machine^[4]
  • Accounting Machine - Class 33^[4]
  • Window Posting Machine - Class 42^[4]
• Olivetti:
  • General Bookkeeping Machine (GBM)^[7]
• J. B. Rea Company:
  • READIX,^[9][10][11] c. 1955^[12][7]
• Sundstrand Adding Machines^[2]
• Underwood:
  • ELECOM 50 "The First Electronic Accounting Machine" ^{[5][7][13][14]}
  • ELECOM 125, 125 FP (File Processor),^[5][7][15] 1956^[16]

See also

• Unit record equipment