Week One

2. Continuous signals, as seen in the Antikythera Mechanism and astrolabes.
3. One of the earliest computers, she was part of a three-person team that predicted the return of Halley's Comet in 1758 after it had been gone for 76 years.
4. Girl The "kilo girl" was a measure of computing speed, equal to the amount of math 1,000 women could do per hour.
6. Breaking down a complex problem or system into smaller, more manageable parts.
8. A semiconductor device used to amplify or switch electrical signals and power.
9. Removing details from a solution so that it can work for many problems, focusing on the important information only, ignoring irrelevant detail.
12. An English mathematician, computer scientist, logician, cryptanalyst, philosopher, and theoretical biologist.
16. Used by astronomers to identify stars and planets, and as navigation aids.
18. A value that is either 1 or 0, or on/off.
19. Swan Leavitt A computer whose discoveries led Edwin Hubble to develop his theories about the expansion of the universe.
20. The first large-scale, electronic, digital computer capable of being reprogrammed to solve a full range of computing problems (1943).

1. A type of loom that used punched cards to represent designs.
3. An English mathematician and writer, widely regarded as the first computer programmer.
5. From the 1600s to the 1960s the term computer referred to a person, not a machine.
7. Self-operating machines.
8. 8 trillion bits.
10. A step-by-step set of instructions to solve a problem or perform a task, or the rules to follow to solve the problem.
11. Uses discrete (discontinuous) values.
13. A Harvard computer in the late 19th century that used astronomical calculations to develop the Harvard Classification Scheme.
14. Discovered the first computer bug (an actual moth) and was the first to devise the theory of machine-independent programming languages. She used this theory to develop the FLOW-MATIC programming language and COBOL.
15. Designed the Analytical Engine.
17. 8 bits.