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Issue #201 April 2007
Brought to you by: 
Across
2. FOB—An item used to remotely open a car or identify a key ring
5. EEPROM—Erasable memory
6. AMBIENT—Surrounding; enclosing
8. KIOSK—A self-service public computer system that is set up for information
browsing
9. DSPACE—An open-source software package used as a digital repository
14. SPECTRUM—An array of frequencies admitted or absorbed by a substance
17. BROWSER—A program used to access the Internet
19. ISOCHRONOUS—A signal that must be delivered within a specific set
of equal time limits
21. TYPEDEF—A declaration in C language to give a variable type a new
name and make the program more readable
22. MOSFET—A type of metal transistor
Down
1. HYPERLINK—A word or phrase that links to another document when clicked
with a mouse
3. BABBAGE—The British mathematician (1791–1871) who designed the first
digital computer
4. TIMEOUT—A signal sent after a program has waited a specified length
of time for an event that did not occur.
6. ADDENDUM—An additional item added to the end of a datasheet
7. MODBUS—A communications protocol that allows Modicon-programmable controllers
to communicate with each other
10. EMBEDDED—The type of programming featured in Circuit Cellar this month
11. DITHER—Noise or incorrect signals added to a digital signal to reduce
the amount of digital distortion
12. CALDERA—A basin-shaped volcanic crater
13. OSCILLOSCOPE—A device that displays various electornic quantities
on a screen in the form of voltages
15. PSD—File name for Photoshop files
16. PATCH—Supplemental software that you add to a program to fix problems
18. OBSOLETE—What is outdated hardware or software?
20. RIFT—A break in a planet's surface
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