Component use in mini project (Digital tachometer)

List of component:

1) Lcd 16x2
  Lcd use as the output for digital tachometer.

Lcd 16x2

2) Variable resistor

Variable resistor function to adjust the brightness of LCD

Variable resitor 

 3) Toolstick starter kit In this project we need to use toolstick850 silicon lab. The toolstick starter kit(toolstick850) contains the following item:

• Toolstick c8051F850 daughter card
• Toolstick based adapter 
• Usb extension cable

Toolstick starter kit

Component contains in toolstick daughter card :

• Push-button switches
• Current measure jumper
• Power LED
• Potentiometer
• LEDs
• Ic 8051

Component contain in toolstick daughter card

For this mini project digital tachometer, we only use one push button and ic 8051 from the toolstick daughter card.Supply circuit is no need for this project because we use toolstick that already have supply from laptop.