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2017 Final-term Examination (100)
Basic Computer Design
Date: 2017-12-13
1. ์ด๋ฒˆ ICT+UD ๊ฒฝ์ง„๋Œ€ํšŒ์— ์ถœํ’ˆํ•œ ๋ณธ์ธ ์ž‘ํ’ˆ์— ์žˆ๋Š” HW system ๋ถ„ํ•ด๋„/๊ณ„์ธต๋„/๊ด€๊ณ„
๋„๋ฅผ ๊ทธ๋ฆฌ์‹œ์˜ค. (20)
๊ฐ ํŒ€๋ณ„๋กœ ์ œ์ถœํ•œ ํŒ๋„ฌ ์ž๋ฃŒ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ํ‰๊ฐ€.
2. Computer์— compiler๋ฅผ ์‚ฌ์šฉํ•˜๋Š” ์ด์œ ๋ฅผ ๊ตฌ์ฒด์ ์œผ๋กœ ์„ค๋ช…ํ•˜๋ผ. (10)
- ์‚ฌ์šฉ์ž๊ฐ€ ์ž…๋ ฅํ•œ programming language๋ฅผ CPU๊ฐ€ ์ดํ•ดํ•  ์ˆ˜ ์žˆ๋Š” machine code๋กœ
๋ฐ”๊ฟˆ์œผ๋กœ์จ, ์‚ฌ์šฉ์ž๊ฐ€ ์ง์ ‘ machine code๋ฅผ ์ž…๋ ฅํ•  ํ•„์š” ์—†์ด ์ดํ•ด๊ฐ€ ํŽธํ•œ
programming language๋ฅผ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋‹ค.
- ์‚ฌ์šฉ์ž๊ฐ€ ์ตœ์ ํ™”ํ•˜๊ธฐ ํž˜๋“  ๋ถ€๋ถ„๊นŒ์ง€ compiler๊ฐ€ ์ตœ์ ํ™”ํ•˜์—ฌ CPU ๋ฐ memory ์‚ฌ์šฉ ํšจ
์œจ์„ ๊ทน๋„๋กœ ๊ฐœ์„ ํ•  ์ˆ˜ ์žˆ๋‹ค.
3. ์ตœ๊ทผ์— ์™€์„œ ARM CPU๊ฐ€ ๊ฐ๊ด‘์„ ๋ฐ›๋Š” ์ด์œ ๋ฅผ ์„ค๋ช…ํ•˜๋ผ. (10)
- ์ „ํ†ต์ ์ธ CISC CPU์˜ ํ•œ๊ณ„๋ฅผ ๊ทน๋ณตํ•œ ๋ฐฉ์‹์ธ RISC CPU์˜ ๋Œ€ํ‘œ์ฃผ์ž์ด๋ฏ€๋กœ ์ธ๊ธฐ๊ฐ€ ์žˆ๋‹ค.
- ARM CPU๋Š” ์ตœ์ ํ™”๋ฅผ ํ†ตํ•ด ์ „๋ ฅ ์†Œ๋น„๋ฅผ ๋งค์šฐ ์ค„์ด๊ณ  ์žˆ๋‹ค. ์ด์™€ ๋™์‹œ์— CPU ์‹คํ–‰ ์†
๋„๋„ ๋น„์Šทํ•œ ์ข…๋ฅ˜์˜ CPU์— ๋น„ํ•ด ์šฐ์ˆ˜ํ•˜๋‹ค.
- ์ด๋Ÿฌํ•œ ํŠน์ง•์œผ๋กœ ์ธํ•ด smart device์™€ IoT์— ARM CPU๋ฅผ ๋งŽ์ด ์ฑ„ํƒํ•˜๊ณ  ์žˆ๋‹ค.
4. Arduino์— push button์„ ์—ฐ๊ฒฐํ•˜์—ฌ ์‚ฌ์šฉ์ž ์ž…๋ ฅ์„ ๋ฐ›์œผ๋ ค ํ•œ๋‹ค. Code์—๋Š” setup()๊ณผ
loop()๋ฅผ ๋ฐ˜๋“œ์‹œ ์‚ฌ์šฉ. (60)
1) Arduino์™€ push button์˜ ๊ฒฐ์„ ๋„๋ฅผ ๊ทธ๋ ค๋ผ. (20)
- ๋‘˜ ์ค‘ ํ•˜๋‚˜๋งŒ ์„ ํƒํ•ด๋„ ์ •๋‹ต ์ฒ˜๋ฆฌ
- Digital pin์€ 0, 1์„ ์ œ์™ธํ•˜๊ณ  ์ž„์˜๋กœ ์„ ํƒ ๊ฐ€๋Šฅ
2
[์ผ๋ฐ˜์ ์ธ ์—ฐ๊ฒฐ]
[Pullup ์—ฐ๊ฒฐ]
2) ์ด HW๋ฅผ ๊ตฌ๋™ํ•˜๊ธฐ ์œ„ํ•œ Arduino code๋ฅผ ์ œ์‹œํ•˜๋ผ. Code๋Š” ์งง์„์ˆ˜๋ก ๊ฐ€์‚ฐ์  ๋ฐ˜์˜.
(20)
๋‘˜ ์ค‘ ํ•˜๋‚˜๋งŒ ์„ ํƒํ•ด๋„ ์ •๋‹ต ์ฒ˜๋ฆฌ
[์ผ๋ฐ˜์ ์ธ ์—ฐ๊ฒฐ]
void setup() {
pinMode(2, INPUT);
}
3
void loop() {
int nInput = digitalRead(2);
}
[Pullup ์—ฐ๊ฒฐ]
void setup() {
pinMode(2, INPUT_PULLUP);
}
void loop() {
int nInput = digitalRead(2);
}
3) 2)๋ฒˆ code๋ฅผ ๋” ๋ฐœ์ „์‹œ์ผœ ์‚ฌ์šฉ์ž๊ฐ€ push button์„ ๋ˆ„๋ฅด๋ฉด โ€œonโ€, ๋ˆ„๋ฅด์ง€ ์•Š์œผ๋ฉด โ€œoffโ€
๋ฅผ ์ถœ๋ ฅํ•˜๋Š” code๋ฅผ ์ œ์‹œํ•˜๋ผ. Code๋Š” ์งง์„์ˆ˜๋ก ๊ฐ€์‚ฐ์  ๋ฐ˜์˜. (20)
void setup() {
pinMode(2, INPUT_PULLUP);
Serial.begin(9600);
}
void loop() {
int nInput = digitalRead(2);
if (nInput == HIGH) Serial.println(โ€œoffโ€);
else Serial.println(โ€œonโ€);
delay(100);
}

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TestBCD2017-2(answer)

  • 1. 1 2017 Final-term Examination (100) Basic Computer Design Date: 2017-12-13 1. ์ด๋ฒˆ ICT+UD ๊ฒฝ์ง„๋Œ€ํšŒ์— ์ถœํ’ˆํ•œ ๋ณธ์ธ ์ž‘ํ’ˆ์— ์žˆ๋Š” HW system ๋ถ„ํ•ด๋„/๊ณ„์ธต๋„/๊ด€๊ณ„ ๋„๋ฅผ ๊ทธ๋ฆฌ์‹œ์˜ค. (20) ๊ฐ ํŒ€๋ณ„๋กœ ์ œ์ถœํ•œ ํŒ๋„ฌ ์ž๋ฃŒ๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ํ‰๊ฐ€. 2. Computer์— compiler๋ฅผ ์‚ฌ์šฉํ•˜๋Š” ์ด์œ ๋ฅผ ๊ตฌ์ฒด์ ์œผ๋กœ ์„ค๋ช…ํ•˜๋ผ. (10) - ์‚ฌ์šฉ์ž๊ฐ€ ์ž…๋ ฅํ•œ programming language๋ฅผ CPU๊ฐ€ ์ดํ•ดํ•  ์ˆ˜ ์žˆ๋Š” machine code๋กœ ๋ฐ”๊ฟˆ์œผ๋กœ์จ, ์‚ฌ์šฉ์ž๊ฐ€ ์ง์ ‘ machine code๋ฅผ ์ž…๋ ฅํ•  ํ•„์š” ์—†์ด ์ดํ•ด๊ฐ€ ํŽธํ•œ programming language๋ฅผ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋‹ค. - ์‚ฌ์šฉ์ž๊ฐ€ ์ตœ์ ํ™”ํ•˜๊ธฐ ํž˜๋“  ๋ถ€๋ถ„๊นŒ์ง€ compiler๊ฐ€ ์ตœ์ ํ™”ํ•˜์—ฌ CPU ๋ฐ memory ์‚ฌ์šฉ ํšจ ์œจ์„ ๊ทน๋„๋กœ ๊ฐœ์„ ํ•  ์ˆ˜ ์žˆ๋‹ค. 3. ์ตœ๊ทผ์— ์™€์„œ ARM CPU๊ฐ€ ๊ฐ๊ด‘์„ ๋ฐ›๋Š” ์ด์œ ๋ฅผ ์„ค๋ช…ํ•˜๋ผ. (10) - ์ „ํ†ต์ ์ธ CISC CPU์˜ ํ•œ๊ณ„๋ฅผ ๊ทน๋ณตํ•œ ๋ฐฉ์‹์ธ RISC CPU์˜ ๋Œ€ํ‘œ์ฃผ์ž์ด๋ฏ€๋กœ ์ธ๊ธฐ๊ฐ€ ์žˆ๋‹ค. - ARM CPU๋Š” ์ตœ์ ํ™”๋ฅผ ํ†ตํ•ด ์ „๋ ฅ ์†Œ๋น„๋ฅผ ๋งค์šฐ ์ค„์ด๊ณ  ์žˆ๋‹ค. ์ด์™€ ๋™์‹œ์— CPU ์‹คํ–‰ ์† ๋„๋„ ๋น„์Šทํ•œ ์ข…๋ฅ˜์˜ CPU์— ๋น„ํ•ด ์šฐ์ˆ˜ํ•˜๋‹ค. - ์ด๋Ÿฌํ•œ ํŠน์ง•์œผ๋กœ ์ธํ•ด smart device์™€ IoT์— ARM CPU๋ฅผ ๋งŽ์ด ์ฑ„ํƒํ•˜๊ณ  ์žˆ๋‹ค. 4. Arduino์— push button์„ ์—ฐ๊ฒฐํ•˜์—ฌ ์‚ฌ์šฉ์ž ์ž…๋ ฅ์„ ๋ฐ›์œผ๋ ค ํ•œ๋‹ค. Code์—๋Š” setup()๊ณผ loop()๋ฅผ ๋ฐ˜๋“œ์‹œ ์‚ฌ์šฉ. (60) 1) Arduino์™€ push button์˜ ๊ฒฐ์„ ๋„๋ฅผ ๊ทธ๋ ค๋ผ. (20) - ๋‘˜ ์ค‘ ํ•˜๋‚˜๋งŒ ์„ ํƒํ•ด๋„ ์ •๋‹ต ์ฒ˜๋ฆฌ - Digital pin์€ 0, 1์„ ์ œ์™ธํ•˜๊ณ  ์ž„์˜๋กœ ์„ ํƒ ๊ฐ€๋Šฅ
  • 2. 2 [์ผ๋ฐ˜์ ์ธ ์—ฐ๊ฒฐ] [Pullup ์—ฐ๊ฒฐ] 2) ์ด HW๋ฅผ ๊ตฌ๋™ํ•˜๊ธฐ ์œ„ํ•œ Arduino code๋ฅผ ์ œ์‹œํ•˜๋ผ. Code๋Š” ์งง์„์ˆ˜๋ก ๊ฐ€์‚ฐ์  ๋ฐ˜์˜. (20) ๋‘˜ ์ค‘ ํ•˜๋‚˜๋งŒ ์„ ํƒํ•ด๋„ ์ •๋‹ต ์ฒ˜๋ฆฌ [์ผ๋ฐ˜์ ์ธ ์—ฐ๊ฒฐ] void setup() { pinMode(2, INPUT); }
  • 3. 3 void loop() { int nInput = digitalRead(2); } [Pullup ์—ฐ๊ฒฐ] void setup() { pinMode(2, INPUT_PULLUP); } void loop() { int nInput = digitalRead(2); } 3) 2)๋ฒˆ code๋ฅผ ๋” ๋ฐœ์ „์‹œ์ผœ ์‚ฌ์šฉ์ž๊ฐ€ push button์„ ๋ˆ„๋ฅด๋ฉด โ€œonโ€, ๋ˆ„๋ฅด์ง€ ์•Š์œผ๋ฉด โ€œoffโ€ ๋ฅผ ์ถœ๋ ฅํ•˜๋Š” code๋ฅผ ์ œ์‹œํ•˜๋ผ. Code๋Š” ์งง์„์ˆ˜๋ก ๊ฐ€์‚ฐ์  ๋ฐ˜์˜. (20) void setup() { pinMode(2, INPUT_PULLUP); Serial.begin(9600); } void loop() { int nInput = digitalRead(2); if (nInput == HIGH) Serial.println(โ€œoffโ€); else Serial.println(โ€œonโ€); delay(100); }