CPSC 409 EXAM 1 QUESTIONS WITH ANSWERS
100% PASS
How do you represent quantities with fingers? - ANSWER - Simplest case: Each digit is
mapped to a number (limited to 0-10)
- Binary approach: Digit are mapped to values but each can be raised independently.
(2^# digits can be represented; roughly 1024)
- Chinese finger notation: Each joint of the finger are used to represent quantities.
How do you set up and use the European abacus?
- The abacus influenced the _____ language, and was its approximate time of invention
was _____
- Pebbles used for the abacus during Roman times were called, _____, which is how
_______, and _______ were derived. - ANSWER - Bottom 3 rows are 1, 5, and 10; the rest are
a multiple of 5 and 10's up until 100000
- English; 1200 AD
- Calculi; Calculus, Calculate
- The astrolabe is a 2(sometimes 3) dimensional representation of the _______; it a _______
, on a 2D surface
- What are the uses of the astrolabe?
- When was it used? - ANSWER - Celestial sphere; projection of the map of the sky
- Measure latitude/ determine approximate location (through the angle of the north star)
- Determine time: Given the suns location, when at the latitude it is the xyz time of day
- Estimate height of objects
- Casting of horoscope
- Used in the Arab empire in 600AD; up to 1600AD
- The Gunter's Quadrant was developed by ______; it was based on ______, and solved the
same problems as it; however, what was the differentiating factor? - ANSWER - Edmund
Gunter (1581-1626)
- Astrolabe
- The Astrolabe was circular, while the quadrant was folded into a quarter circle.
The proportional compass was used by draftsmen to _____ or _____ ______ in any given
proportion
100% PASS
How do you represent quantities with fingers? - ANSWER - Simplest case: Each digit is
mapped to a number (limited to 0-10)
- Binary approach: Digit are mapped to values but each can be raised independently.
(2^# digits can be represented; roughly 1024)
- Chinese finger notation: Each joint of the finger are used to represent quantities.
How do you set up and use the European abacus?
- The abacus influenced the _____ language, and was its approximate time of invention
was _____
- Pebbles used for the abacus during Roman times were called, _____, which is how
_______, and _______ were derived. - ANSWER - Bottom 3 rows are 1, 5, and 10; the rest are
a multiple of 5 and 10's up until 100000
- English; 1200 AD
- Calculi; Calculus, Calculate
- The astrolabe is a 2(sometimes 3) dimensional representation of the _______; it a _______
, on a 2D surface
- What are the uses of the astrolabe?
- When was it used? - ANSWER - Celestial sphere; projection of the map of the sky
- Measure latitude/ determine approximate location (through the angle of the north star)
- Determine time: Given the suns location, when at the latitude it is the xyz time of day
- Estimate height of objects
- Casting of horoscope
- Used in the Arab empire in 600AD; up to 1600AD
- The Gunter's Quadrant was developed by ______; it was based on ______, and solved the
same problems as it; however, what was the differentiating factor? - ANSWER - Edmund
Gunter (1581-1626)
- Astrolabe
- The Astrolabe was circular, while the quadrant was folded into a quarter circle.
The proportional compass was used by draftsmen to _____ or _____ ______ in any given
proportion
