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THE FOUR PROJECT USING BY RELAY 1/. USING ONE RELAY WITH LED            * COMPOMENT  1  RELAY  LED T BLOCK  BOARD   * ការ​រៀបចំ ត្រូវយក​ T BLOCK តជាមួយ RELAY       ហើយបានយក T BLOCK ជាមួយ LED និង​បញ្ចូលភ្លើង DC  នៅលើ BOARD  ​​ * រូបភាព ( SCHEMATIC )  * រូបភាពចេញសមតិផល 2/. USING RELAY 5V WITH MODULE   * COMPOMENT  RELAY T BLOCK BOARD  DIODE RESISTOR 220 ohm and 1K  ខ្សែភ្លើងសំរាប់ភ្ជាប់ RESISTOR 10K BOARD ARDUINO LED * រូបភាព (​ SCHEMATIC ) * PCB *3D * រូបភាពចេញសមតិផល 3/. USING RELAY WITH ONE BUTTON OPEN AND CLOSE  * COMPOMENT  BUTTON NC  RELAY (2 ) T BLOCK LED DIODE (2) BOARD * រូបភាព (​ SCHEMATIC ) * PCB * 3D 4/. USING RELAY TO CONTORT MOTROR FORWARD BLACK AND STOP * COMPONENT T BLOCK (3) RELAY (4) RESISTOR 220 ohm ( 3) DIODE (2) LED (3) BUTTO

Name : TAK KIMHONG HOMEWORK 1/The sets A,B and C are Given by A={a,3,5,7,9},B={0,2,4,6} and C={1,5,9} and the universal set, E={0,1,2,........,9}. 2/USE Venn diagrams to illustrate the following for general sets C and D: (a) C ꓵ D (b) C ꓴ D (C) C ꓵ D (d) C ꓴ D (e) C ꓵ D 3/By drawing Venn diagrams verify De Morgan’s laws AꓵB = AꓴB and AꓴB = AꓵB 4/Truth table & representative circuit schematic + symbol 5/simulation proteus 6/XOR Using Not AND and OR ANSWER 1/. (a) (b) AꓴB ={0,1,2,3,4,5,6,7,9} (C) BꓵC=Ø (e) A={0,2,4,6,8} (f) BꓵC= {3,7,8} (g) BꓴC={3,7,8} 2/ (a) C ꓵ D  (b) C ꓴ D (c) C ꓵ  D ̅ (d) ( C∪D ) ̅ (e) (C ꓵ D ) ̅ 3/. (A ꓵ D ) ̅  =A ̅  ∪ B ̅  (A∪  D ) ̅  =A ̅  ꓵ   B ̅  4/. ( OR ) (AND) (NOT) (NAND) (XOR) 5/. simulation proteus * ( OR Gate ) * ( AND Gate ) 6/.    XOR Using Not AND and OR THE END