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Fig.1, TIM-100 workstation
Fig.2, TIM-100 system

The TIM-100 was a PTT teller microcomputer developed by Mihajlo Pupin Institute (Serbia) in 1985 (Ref.lit. #1). It was based on the Intel microprocessors types 80x86 and VLSI circuitry. RAM had capacity max.8MB, and the external memory were floppy disks of 5.25 or 3.50 inch. (Ref.literature #2, #3 and #4). Multiuser, multitasking Operating system was real-time NRT and also TRANOS (developed by PTT office).

See also[edit]


  • 1. D.Milicevic, D.Starcevic, D.Hristovic: "Architecture and Applications of the TIM Computers", Primenjena nauka journal, No 14, pp. 23–30, Belgrade May 1988. (in Serbian)
  • 2. Dragoljub Milicevic, Dusan Hristovic(Ed): RACUNARI TIM (TIM Computers), Naucna Knjiga,Belgrade 1990.
  • 3. Computing Technology in Serbia, by Dusan Hristovic, Phlogiston, No 18/19, pp. 89–105, Museum MNT-SANU, Belgrade 2010/2011. (in Serbian)
  • 4. 50 Years of Computing in Serbia- Hronika digitalnih decenija, by D.B.Vujaklija, N. Markovic-Ed, pp. 37–44 and 75-86 in this book, PC Press, Belgrade 2011. (in Serbian).
Fig.3, TIM-100 PTT teller workstation,1985
TIM designers, IMP-Belgrade

Fig.4. TIM designers from M.P.Institute-Belgrade, Wikimedia