Ancient Computers, Part I - Rediscovery, Edition 2
Stephen Kent Stephenson
- 出版商: CreateSpace Independ
- 出版日期: 2013-07-14
- 售價: $800
- 貴賓價: 9.5 折 $760
- 語言: 英文
- 頁數: 74
- 裝訂: Paperback
- ISBN: 1490964371
- ISBN-13: 9781490964379
-
相關分類:
Key-Value Store
海外代購書籍(需單獨結帳)
商品描述
People, especially historians, have long struggled to appreciate and understand how Ancient Romans, Greeks, Egyptians, and Babylonians, et al, were able to do their arithmetic calculations. Many say the Ancients "probably" used line abacuses or abaci, a.k.a. counting boards. But most then trivialize the possible impact that use would have on the Ancient cultures because they really don't think those abaci would be very powerful and would be extremely hard to use.
The (re-)discovery Ancient Computers documents and explores materialized from the author's experiences in engineering, with a knowledge that design compromises often have to be made; computer programming, especially the different number bases used; the hobby use of a Japanese abacus called the Soroban; and study of the Ancients' numbers and culture.
The bottom line is that the Ancients had a powerful and lightning fast computer; powerful and fast compared to any other calculation method available to them in their time. Features included:
I hope you find Ancient Computers interesting and useful.
-Steve Stephenson, July 15, 2010
M.Eng.(Elect.), M.Ed.
Math Teacher (Calculus & Precalculus)
Lowell High, MA
Edition 2 changes some formatting and adds two appendices:
N: Nonary Base (candidate for electronic implementations); and
V: Visualizing Abacus Arithmetic.
Edition 2 is now available as a printed book in addition to the Kindle eBook.
Two DVDs containing the Stephenson Videos are also available on Amazon.com as
Ancient Computers: Part II - Video Users Manual:
Math Teacher (Retired 6/30/2013)
The (re-)discovery Ancient Computers documents and explores materialized from the author's experiences in engineering, with a knowledge that design compromises often have to be made; computer programming, especially the different number bases used; the hobby use of a Japanese abacus called the Soroban; and study of the Ancients' numbers and culture.
The bottom line is that the Ancients had a powerful and lightning fast computer; powerful and fast compared to any other calculation method available to them in their time. Features included:
- multi-base number modes: e.g., sexagesimal, decimal, duodecimal, or nonary;
- operating on those numbers in two parts: a signed fraction of the base and a signed exponent of the base, equivalent to scientific notation;
- easy and low-cost expandability; and
- built-in error checking!
I hope you find Ancient Computers interesting and useful.
-Steve Stephenson, July 15, 2010
M.Eng.(Elect.), M.Ed.
Math Teacher (Calculus & Precalculus)
Lowell High, MA
Edition 2 changes some formatting and adds two appendices:
N: Nonary Base (candidate for electronic implementations); and
V: Visualizing Abacus Arithmetic.
Edition 2 is now available as a printed book in addition to the Kindle eBook.
Two DVDs containing the Stephenson Videos are also available on Amazon.com as
Ancient Computers: Part II - Video Users Manual:
- How to Use a Counting Board Abacus (1 of 2); and
- How the Romans Used a Counting Board Abacus (2 of 2).
Math Teacher (Retired 6/30/2013)