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PIC
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This is PIC16F84A. In case of PIC16F84A, it is possible to use clock frequency upto 20 MHz. The circuit this time, I am using 10-MHz resonator.
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78L05
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This regulator is used to make the stable power of +5 V.
The maximum output current is 100 mA.
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IC socket
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The PIC is mounted after writing a program by programmer. So, the IC socket is necessary.
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Resonator
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I used 10-MHz resonator. A ceramic vibrator and capacitors for the oscillation are combined inside.
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LED
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I used red high brightness-type LEDs. Because a 560-ohm resistor is put in series with the LED, the current in lighting-up is about 5 mA.
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Switch
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This is the switch to select the blinking pattern of LEDs. It is printed board mounting type and non lock type.
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Resistor
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These resistors are used for current control of the LEDs( 560 ohm ) and pull-up of the PIC input terminals( 10K ohm ).
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Electrolytic capacitor
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This capacitor is used to be stabilized of the input voltage and to bypass a low frequency noise.
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Multilayer ceramic capacitor
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These capacitors are used to bypass the high frequency noise of the input and output of the power supply.
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Printed board
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This is an universal printed board with 15 x 25 halls.
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Wiring terminal
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This terminal is used to connect a power supply wire.
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Stud
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This is used as the leg of the printed board.
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