Catatan Mistar hitung

  1. 1 2 G. S. Rao, A. K. Rao, Ng Chee Aun & Cheng Yok San (1991). "mistar hitung". Kamus Komputer Sekolah Menengah. Penerbit Fajar Bakti Sdn Bhd. m/s. 39. ISBN 967-65-1306-7.CS1 maint: uses authors parameter (link)
  2. ↑ Behrens, Lawrence; Rosen, Leonard J. (1982). Writing and reading across the curriculum. Little, Brown. m/s. 273. Then, just a decade ago, the invention of the pocket calculator made the slide rule obsolete almost overnight...
  3. ↑ Maor, Eli (2009). e: The Story of a Number. Princeton University Press. m/s. 16. ISBN 978-0-691-14134-3. Then in the early 1970s the first electronic hand-held calculators appeared on the market, and within ten years the slide rule was obsolete.
  4. ↑ Castleden, Rodney (2007). Inventions that Changed the World. Futura. m/s. 157. ISBN 978-0-7088-0786-6. With the invention of the calculator the slide rule became instantly obsolete.
  5. ↑ Denning, Peter J.; Metcalfe, Robert M. (1998). Beyond calculation: the next fifty years of computing. Springer. m/s. xiv. ISBN 978-0-387-98588-6. The first hand calculator appeared in 1972 and made the slide rule obsolete overnight.