User guide

341 DECIMAL TO BINARY ENCODER 47
342. BINARY TO BCD 48
343. OCTAL TO BCD 48
344. HEXADECIMAL TO BCD 49
345. 3-SIT SHIFT REGISTER 49
346. SOD-TO-DECIMAL DECODER 50
9) More Digital circuits
347. 4-INPUT DATA SELECTOR 51
348. AND/OR CIRCUIT USING OP AMPLIFIER 51
349. XOR USING OP AMPLIFIER 52
350. TIME SHARING DISPLAY OF LEDS 52
351. LED LIGHTING-DUTY VARYING CIRCUIT USING ONE-SHOT MULTIVIBRATOR 53
352. LED BLINKING-CYCLE VARYING CIRCUIT USING ASTABLE MULTIVIBRATOR 53
353. LCD STATIC DRIVE CIRCUIT 54
354. LCD DYNAMIC DRIVE CIRCUIT 54
355. TESTING LCD DISPLAY RESPONSE 55
356. LED DRIVE BY 4 SWITCHES 55
357. FLASHING LED BY PRESET NUMBER 56
358. DIGITAL TIMER (1 TO 7 MINUTES) 56
359. SOUND TIMER 57
360. PROGRAMMABLE TIMER WITH DOWN COUNTER 57
10) Amusement in Electronic Circuits
361. REVOLVING LIGHT 58
362. PHOTO SWITCH 58
363. DOOR CHIME 59
364. VISITOR SENSING CHIME USING PHOTO-TRANSISTOR 59
365. TOUCH VCO 60
366. SOUND TUNING CIRCUIT 60
367. CROSSING-BELL SOUND GENERATOR 61
368. TURN INDICATOR 61
369. STAIRCASE LIGHT SWITCHING CONTROL CIRCUIT 62
370. PSEUDO CANDLE CIRCUIT 62
371. LIE DETECTOR 63
372. LIGHT SENSING CIRCUIT 63
373. AUTOMATIC LIGHTING LED 64
374. SOUND SENSING LED 64
375. ILLUMINATION LAMP 65
376. INTERCOM 65
377. PIP SOUND INTERPHONE 66
378. ELECTRONIC VOLUME 66
379. PEDESTRIAN SIGNAL 67
380. TIME COUNTER 67
381. LED DISPLAY COUNTING UP/DOWN CIRCUIT 68
382. AN ELECTRONIC PENDULUM 68
383. STAIRCASE LIGHT SWITCHING CONTROL CIRCUIT-Il 69
384. LAMP BRIGHTNESS CONTROL CIRCUIT 69
385. ILLUMINATION CIRCUIT WITH 4-LEDs 70
386. A SIMULATED CAR WINKERS 70
11) Testing and Measuring Circuits
387. BATTERY CHECKER 71
388. CONDUCTITY TESTER 71
389, IC OSCILLATOR/COMPONENT TESTER 72
390. VOLTAGE DROP ALARM 72
391. TRANSISTOR CHECKER 73
392. CURRENT SHUT-DOWN CIRCUIT 73