# Digital Trainers

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Digital Trainer Procedure example

Digital                         Analog

Your Assignment: Write your name in digital code. Use this website for information

Converting Text into Binary Code

 Letter Binary Code Letter Binary Code Letter Binary Code Letter Binary Code A 01000001 a 01100001 N 01001110 n 01101110 B 01000010 b 01100010 O 01001111 o 01101111 C 01000011 c 01100011 P 01010000 p 01110000 D 01000100 d 01100100 Q 01010001 q 01110001 E 01000101 e 01100101 R 01010010 r 01110010 F 01000110 f 01100110 S 01010011 s 01110011 G 01000111 g 01100111 T 01010100 t 01110100 H 01001000 h 01101000 U 01010101 u 01110101 I 01001001 i 01101001 V 01010110 v 01110110 J 01001010 j 01101010 W 01010111 w 01110111 K 01001011 k 01101011 X 01011000 x 01111000 L 01001100 l 01101100 Y 01011001 y 01111001 M 01001101 m 01101101 Z 01011010 z 01111010 space bar 00100000 period (.) 00101110

Digital Vs. Analog Technologies

What are Digital technologies? What are Analog technologies? Which are better?

Digital is breaking the signal into a binary format where the audio or video data is represented by a series of "1"s and "0"s

 256 128 64 32 16 8 4 2 1 on/off on/off on/off on/off on/off on/off on/off on/off on/off 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 1/0 binary decimal plus plus plus plus plus plus plus plus Answer

Digital technologies use 1’s and 0’s to control circuits.  1’s and 0’s are controlled by logic gates. Some logic gates used are:

AND, OR, NOT, NAND, NOR, XOR, and XNOR.

 AND Gates OR Gates NOT Gates A * B = AB A + B = A+B A = NOT A 1 * 1 = 1 or 1 * 0 = 0 1 + 1 = 1 or 1 + 0 = 1 1 = 0 or 0 = 1 2 Input AND Gate 2 Input OR Gate NOT Gate A B Output Q A B Output Q A Not A 0 0 0 0 0 0 0 1 0 1 0 0 1 1 1 0 1 0 0 1 0 1 1 1 1 1 1 1

1’s and 0’s

A 1 represents a true statement, also it means ON
A 0 represents a false statement, also it means OFF

 NAND Gates NOR Gates XOR Gates A * B = NOTAB A + B = NOTA+B A is NOT= to B 1 * 1 = 0 or 1 * 0 = 1 1 + 1 = 0 or 1 + 0 = 0 1 + 0 = 1 or 0 + 1 = 1 2 Input NAND Gate 2 Input NOR Gate 2 Input XOR Gate A B Output Q A B Output Q A B Output Q 0 0 1 0 0 1 0 0 0 0 1 1 0 1 0 0 1 1 1 0 1 1 0 0 1 0 1 1 1 0 1 1 0 1 1 0

### Logic Gates http://www.kpsec.freeuk.com/gates.htm

Logic gates process signals which represent true (1, high, +Vs, on) or false (0, low, 0V, off).
There are two sets of symbols: traditional and IEC (International Electrotechnical Commission).

Gate Type Traditional Symbol IEC Symbol Function of Gate
NOT     A NOT gate can only have one input. The 'o' on the output means 'not'. The output of a NOT gate is the inverse (opposite) of its input, so the output is true when the input is false. A NOT gate is also called an inverter.
AND     An AND gate can have two or more inputs. The output of an AND gate is true when all its inputs are true.
NAND     A NAND gate can have two or more inputs. The 'o' on the output means 'not' showing that it is a Not AND gate. The output of a NAND gate is true unless all its inputs are true.
OR     An OR gate can have two or more inputs. The output of an OR gate is true when at least one of its inputs is true.
NOR     A NOR gate can have two or more inputs. The 'o' on the output means 'not' showing that it is a Not OR gate. The output of a NOR gate is true when none of its inputs are true.
EX-OR     An EX-OR gate can only have two inputs. The output of an EX-OR gate is true when its inputs are different (one true, one false).
EX-NOR     An EX-NOR gate can only have two inputs. The 'o' on the output means 'not' showing that it is a Not EX-OR gate. The output of an EX-NOR gate is true when its inputs are the same (both true or both false).

Analog uses

Use Wave forms to control a device.

Analog is the process of taking an audio or video signal (in most cases, the human voice) and translating it into electronic pulses.

Which is better?

Analog uses more circuitry to control a device. This takes up more room.

Digital uses less circuitry to control a device making it more compact.

Analog can be used to send a signal very far distances.  FM or AM radio
Digital can use an analog signal to send information very far distances but at a clearer signal.

And Gate   Not Gate   Nand Gate

Or Gate    Nor Gate     XOR Gate

• # Digital Trainer worksheet example

Use this formate to solve for each of the 10 digital problems