Accounting machine

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. Accounting machines were widespread from the early 1900s to 1980s, 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 machines were also called accounting machines).

List of Vendors/Accounting Machines

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