The answers to the crossword puzzle published in rCircuit Cellar 261, April 2012.
ACROSS
7. MANCHESTERENCODING—A form of BPSK [two words]
10. REBOOT—Restart
13. HASHTAG—The # label
15. DIRECTORY—File index
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17. DAEMON—Takes place behind the scenes
18. FREEBASIC—Open-source programming language compiler
19. MALWARE—Bad code
DOWN
1. PHASESHIFTKEYING—Transports data by altering a reference signal’s phase [three words]
2. FOURIERTRANSFORM—Changes a signal from the time domain to the frequency domain [two words]
3. ATTENUATON—Used to measure signal loss in dB
4. SHANNONTHEOREM—AKA, the noisy-channel coding theorem [two words]
5. BOOLEAN—Logic system named after George Boole
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6. FREQUENCYMODULATION—Opposite of AM [two words]
8. COULOMBCOUNTER—Measures battery current [two words]
9. FOURTHGENERATION—4G [two words]
11. FIRSTQUARTILE—25th percentile [two words]
12. NORTONAMPLIFIER—Converts a current to a voltage. [two words]
14. HBRIDGE—Four switching components with the load in center
16. CODIFY—A way to organize
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