1.Definitions
The OR gate is an electronic device which receives two inputs each in the form of a
binary digit, that is 0 or 1, and produces a binary digit as output, depending upon the
values of the two inputs. It is represented by the symbol shown in Figure 5.5.
A and B are the two inputs, and F is the single output. As high (1) or low (0) voltages
are applied to A and B various possible outputs are achieved, these being de ned by
means of a truth table as shown in Table 5.3. So, for example, if a low (0) voltage is
applied to A and a high (1) voltage is applied to B, the output is a high (1) voltage at
F. We note that a ‘1’ appears in the right-hand column of the truth table whenever A
or B takes the value 1, hence the name OR gate. We use the symbol + to represent OR.
Because it connects the variables A and B, OR is known as a logical connective.We shall
meet other logical connectives shortly. This connective is also known as a disjunction,
so that A + B is said to be the disjunction of A and B.
2.Name Component in Proteus
4.Real name and picture of Component that we need to use:
- Diode 1N4007 = 3
- Transistor BC547 or 2N2222 = 8
- Resistance 1k=4 , 4k=2 , 2.5k=1 , 1.5k=1 , 150=1
- Jumper or Tblock = 1
- Button = 2
- LED = 1
5.Process in production
- First, we need to print it in powder
- Get it on the board
- Dissolve in acid
- When it is done, drill it in the hole
- Compose the component according to the drawn PCB
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