Last week of lecture!!! Learning More!!!

This week lecture is about electric and digital electronic.


  On the electric class, our lecturer ask us to complete 3 tasks, there is extension wire, ac fluorescent light, dc fluorescent light setup. Before we start to do it, lecturer give out the explanation and direction of the electric setup. The extension wire setup need us to connect the wire to 3 pin plug and also the socket. 3 pin plug made by 4 component, there are fuse, earth terminal(green yellow colour), neutral terminal(blue colour), and live terminal(brown colour). Both the connection in 3 pin plug and socket are the same, just connect the 3 wires to their terminal respectively, but the connection of wire must follow the direction, otherwise will cause the black out of current. 


The composition of 3 pin plug as shown as below.



  In the connection of ac fluorescent light and dc fluorescent light, the component inside the body of fluorescent light almost the same: wire, starter and ballast. To light up the dc or ac fluorescent light, the ballast inside the body play a important role as they using the different ballast. The crossing wire inside the ac fluorescent light is more complicated than in dc fluorescent as it use up 3 wire: earth, neutral, and live. Dc fluorescent light only has to connect positive and negative terminal of dc supply, so it is suitable to use in car.


******************************************************************************************************


  In the lecture of digital electronic, we mainly understand about the analog input, digital output , and also the binary system. The digital electronic playing part in almost everyone daily life and it is the heart of electronic. It make the system function by converting analog data to digital data. The binary system as the counting system in digital electronic interpret the digital system by logic number 1 or 0. Binary number are ideal to use in digital electronic system as it has only 2 valid value.


  Binary number using base 2 number instead of using base 10 number. There is using power square number, 1, 2, 4, 8, 16, 32, and so on. The binary system also represents the bit of the system, the binary digit (bit) showing the discrete voltage level of the system.