Download presentation

Presentation is loading. Please wait.

Published byLogan Bardwell Modified over 3 years ago

1
Logic Gates

2
Digital Signals Logic Gates NOT (Inverter) Gate AND Gate OR Gate NAND Gate NOR Gate XOR Gate

3
Digital Signals Digital signals 0 (false) or 1 (true) Digital signal 1 is represented by a small voltage. Digital signal 0 is represented by no voltage. Digital Waveforms Each column represents a small amount of time 1 (3V) 0 (0V) 1 0 0 1 0 1 1 0

4
Logic Gates An electronic system that performs a logical operation on an input signal Gates process digital inputs to produce digital outputs. How do computer processors make decisions? How do they do math? Display images? Etc.? LOGIC

5
1 0 NOT (Inverter) Gate A logic gate that changes its input logic level to the opposite state Symbol 0 1 Truth Table: A table listing all possible inputs to a circuit and the corresponding outputs Truth Table NOT Gate Input (A)Output (Y) A Y 0 1 1 0

6
Logic Word Problems If I am hungry and it is 5:00 p.m., then I will eat dinner. If I pedal harder or go downhill, then my bike will go faster. If it is windy and cold, then I am not going to walk home. If my battery is dead or I forget headphones, then I cannot listen to my music. Each word problem uses the same logic as a common gate.

7
AND Gate If I am hungry AND it is 5:00 p.m., then I will eat dinner. A logic circuit whose: Inputs both = 1 then, Output = 1 Symbol

8
1 0 0 0 1 0 1 1 1 0 0 0 AND Gate Truth Table AND Gate Input (A)Input (B)Output (Y) A B 0 00 Y 0 01 1 00 1 11

9
OR Gate If I pedal harder OR go downhill, then my bike will go faster. A logic circuit when: Either Input = 1 then, Output = 1 Symbol

10
0 0 0 1 0 1 0 1 1 1 1 1 OR Gate Truth Table OR Gate Input (A)Input (B)Output (Y) A B 0 00 Y 0 11 1 10 1 11

11
NAND Gate If it is windy AND cold, then I am NOT going to walk home. A logic circuit whose: Inputs both = 1 then, Output = 0 Symbol

12
0 0 1 1 0 1 0 1 1 1 1 0 NAND Gate Truth Table NAND Gate Input (A)Input (B)Output (Y) A B 0 10 Y 0 11 1 10 1 01

13
NOR Gate If my battery is dead OR I forget headphones, then I will NOT listen to my music. A logic circuit when: Either Input = 1 then, Output = 0 Symbol

14
0 0 1 1 0 0 0 1 0 1 1 0 NOR Gate Truth Table NOR Gate Input (A)Input (B)Output (Y) A B 0 10 Y 0 01 1 00 1 01

15
XOR Gate I only have enough money for one friend to go to dinner with me. If either one (but not both) want to go to dinner, well go to dinner. A logic circuit when: If A or B = 1, but not both, then Output = 0 Symbol Possible Inputs (conditions)Outputs First Friend wants to go to dinner (T or F) Second friend wants to go to dinner (T or F) We will go to dinner (T or F) FFF FTT TFT TTF

16
0 0 1 0 0 1 1 1 XOR Gate Truth Table XOR Gate Input (A)Input (B)Output (Y) 0 00 0 11 1 10 1 01 0 0 1 1 A B Y

17
Logic Gates Digital Signals Logic Gates NOT (Inverter) Gate AND Gate OR Gate NAND Gate NOR Gate XOR Gate

18
Image Resources Microsoft, Inc. (2008). Clip Art. Retrieved September 10, 2008, from http://office.microsoft.com/en-us/clipart/default.aspx

Similar presentations

OK

Exclusive OR Gate. Logically, the exclusive OR (XOR) operation can be seen as either of the following operations:exclusive OR (XOR) 1. A AND NOT B OR.

Exclusive OR Gate. Logically, the exclusive OR (XOR) operation can be seen as either of the following operations:exclusive OR (XOR) 1. A AND NOT B OR.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on field study definition Ppt on business planning process Ppt on rf based dual mode robot Ppt on teachers day message Free ppt on agriculture in india Free download ppt on resources and development for class 10 Ppt on synthesis and degradation of purines and pyrimidines definition Ppt on company secretary course Free download ppt on area related to circles Ppt on suspension type insulators definition