Presentation_2

```LOGIC DESIGN AND CIRCUITS
BASIC LOGIC GATES
Res. Assist. Hale İNAN
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CONTENT
Sample 14-bit ICs
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74LS08 IC (AND)
74LS32 IC (OR)
74LS04 IC (NOT)
74LS00 IC (NAND)
74LS02 IC (NOR)
74LS86 IC (XOR)
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AND Gate (74LS08 IC)
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Figure on the left
represents 74LS08 IC.
This device contains 4
independent and gates
each of which performs
the logic AND function.
If both A and B are
true, then Q is true.
OR Gate (74LS32 IC)
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Figure on the left
represents 74LS32 IC.
This device contains four
independent gates each of
which performs the logic
OR function.
If either A or B is true,
then Q is true.
NOT Gate (74LS04 IC)
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Figure on the left
represents 74LS04 IC.
This device contains six
independent gates each of
which performs the logic
INVERT function.
If A is not true, then Q is
true.
NAND Gate (74LS00 IC)
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Figure on the left
represents 74LS00 IC.
This device contains four
independent gates each of
which performs the logic
NAND function.
If either A or B are not
true, then Q is true.
NOR Gate (74LS02 IC)
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Figure on the left
represents 74LS02 IC.
This device contains four
independent gates each of
which performs the logic
NOR function.
If both A and B are not
true, then Q is true.
Note that the pin
configuration for the two
integrated circuits is
different. (NOR & AND)
XOR Gate (74LS86 IC)
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Figure on the left
represents 74LS86 IC.
This device contains four
independent gates each of
which performs the logic
XOR function.
SWITCH
A switch is a component which controls the open-ness or
closed-ness of an electric circuit.
Open / Closed
OFF state: Open-circuit (preventing current from flowing)
ON state: Closed-circuit (allowing current to flow)
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The red wire represents
positive pin and black one
represents negative pin.
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Breadboard Connections – Step 2 Cont.
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Breadboard Connections – Step 4 Cont.
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Breadboard Connections – Step 4 Cont.
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Breadboard Connections – Step 5 Cont.
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Breadboard Connections – Step 5 Cont.
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Breadboard Connections – Step 5 Cont.
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Breadboard Connections – Step 5 Cont.
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