1. SE-3910 Real-time Systems Week 2, Class 3 – Return Quiz, Q’s on HW Assignment? – Signals – Audio! – Review/Basic Circuits Kirkhoff’s Current & Voltage Law, Equivalent Resistance Ohm’s Law, Switches, Potentiometers, & Pull-up resistors How to burn up your Beaglebone (Didn’t cover) Quiz Tuesday at start of Lab 3 – On prelab video, Beagleboard circuits, etc. SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling, Some from Dr. Hornick, etc. 1

2. Upcoming Quiz:Topics [STALE: See Monday’s!] Prelab video – questions similar to the quiz at the end of Dr. Schilling’s video (TBA) How to burn up your Beaglebone Beaglebone I/O circuits Locating a pin on board – (will supply necessary figures!) Label amplitude, peak-to-peak voltage, pulse- width, etc. on a waveform & compute V eff SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 2

3. Sketching & Listening to Waveforms Sine wave Square wave Sawtooth wave(s) Random wave Efffect of changing – Amplitude – Frequency – Phase (time shift) On sound! Also: Rise Time, Time Difference, Offset SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 3

4. A – 440 [Didn’t discuss] The A above middle C – An American Standard - 1936 ASA (ANSI) – International – 1955, 75 (ISO-16) 440 Hz = 440 cps (archaic) Used to tune most modern instruments SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 4

5. Pinout: Analog Discovery (Digilent) SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 5

6. PC SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 6 Contains separate Microprocessor(s) Memory Peripheral (I/O) device HW serial port parallel port USB port Bluetooth port IR port AGP port WiFi port,…

7. Beaglebone SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 7

8. SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 8

9. Expansion SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 9

10. A Cape SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 10

11. SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 11

12. Finding GPIO Port SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 12

13. SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 13 Resistor Switch Ground Battery Source

14. SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 14

15. SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 15 ITMQTYREFPARTDESCRIPTIONDISTRPART # 11 PCB2-LAYER 3.4" x 2.15" 22P1, P22x23 HDR FEDUAL - STRAIGHT SOCKET STRIP.025" SQ. PINSMLESSHQ-123-D-08-F-LF 31P38 PIN HDR FECONN HEADER FEMALE 8 POS 0.1" GOLDDKPPPC081LFBN-RC 42S1, S2BUTTONSSWITCH TACT SPST-NO.05A 24VDKB3F-1000 52D1, D2LEDSLED GREEN 3MM 568NM 20mA 2.12VDKWP7104SGC 62R1, R2RESISTORRES 470 OHM 1/4W 5% CF MINIDKCFM14JT470R 71BR1BREADBOARDWHT ADHSV SLDRLSS BRDBRD 170 TIE PT 1.8" x 1.37"PLU1490 81 JMPR WIRE KIT10 x 14 LNGTH.1".2".3".4".5".6".7".8".9" 1" 2" 3" 4" 5"SQR

16. Class Example SE-3910 - Dr. Josiah Yoder Slide style: Dr. Hornick Much Material: Dr. Schilling 16