Archives for the ‘Tutorials’ Category

How to use an LCD display with only three lines I / O of the HC908

Consider the circuit, HC908QY4 is the heart of all. It uses a pin PTB0, PTB1 and PTB2 to control and display the text on the LCD. This leads to (shift regiter – serial to parallel converter) CD4094 that we will provide the data bus to LCD display.

Schematic of the circuitIn the CD4094 data are synchronized on the rising edge and the LCD display will take on the falling edge shows us that this signal can be shared.

DIY : VGA to MAC connector

MAC to VGA connectorMaybe one of you has a problem with a faulty monitor your mac and want to replace with a regular PC monitor. But you realize that MAC VGA connector is different.

How to use Analog oscilloscope ?

Oscilloscope panelThe oscilloscope is a device for viewing the changes in a variable size in time. It uses an electron beam to translate, by a curve drawn on a screen voltage variations. For proper using oscilloscope, follow the instructions in the order by referring to the description of the front panel of the oscilloscope.
Starting up and preset the unit :