Transcript Slide 1

RM2B
Learning how to
build circuits on
a BREADBOARD!
What is a Breadboard?
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A Breadboard is a device used to connect circuits
without SOLDERING the parts together
Why is it called a “BREADBOARD”?
 In the early years, just after the great
depression, families kept everything! In fact,
it was in these years that we started to buy
bread that was sliced . Prior to that, all bread
was bought as a whole loaf. Instead of
throwing out the “BREADBOARDS” people
kept them and as the experimentation with
electronics started, breadboards were used
to help wire or “CONNECT” all the parts of a
circuit together. Obviously, the name stuck!
Why do we need BREADBOARDS?
With Breadboards no
SOLDERING is required to
build and TEST a circuit!
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Without a Breadboard, we would
have to solder everything together
even to test a circuit.
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Soldered Components
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9 volt
Battery
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Battery
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So how does the BREADBOARD work?
When you want to connect two parts together ‘you place the legs of the parts
in the same VERTICAL ROW.
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In the circuit to the
right, you can see
that the resistor is
connected to the
negative side of the
battery by being
plugged into holes
in the same
VERTICAL ROW.
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SHOWN HERE
Likewise, The other
side of the resistor is
connected to the
negative lead of the
LED and those two
legs are in the same
VERTICAL ROW
also! In the next
slide, you will see
the connection
patterns of the
breadboard
illustrated a little
further.
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The HORIZONTAL
CONNECTED Blocks at the
TOP and BOTTOM of the
breadboard are called the
BUSS STRIP and they
connect all the way across
the board as shown.
The horizontal darkened squares represent the “BUSS STRIP
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LOWER BUSS
STRIP
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Divider
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Shown Here
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Row 5 shows vertical board connections .
The VERTICAL
CONNECTONS
connect like the
pattern shown
in darkened
VERTICAL
blocks.
The BUSS STRIPS are generally used to connect
GROUND at the bottom of the board and POSITIVE
at the top of the board.
The horizontal darkened squares represent the “BUSS STRIP
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Row 5 shows vertical board connections .
There are generally quite a few POSITIVE and GROUND
connections in most circuits, so this arrangement of
BUSS STRIPS can make BREADBOARDING easier!
The divider shown in the diagram on the left is
used to separate the two halves of the circuit
board so that Integrated Circuits can be placed
across the center, as shown in the right
diagram.
The horizontal darkened squares represent the “BUSS STRIP
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Divider
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Row 5 shows vertical board connections .
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The VERTICAL holes on the lower side of the board
ARE NOT connected to the VERTICAL holes on the
upper side of the board.
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