Welcome!😊
Welcome!
This is the forth week of computer science class. It is also the last week of September. We have watched the video of the inside part of our computer. We did a role-play of a CPU and we learnt to convert to and from decimal. We also took a test of typing skill in the second class of this week.
Inside a Computer
During the class, we watched a video. After watching the video clip, everyone in the class shared about what they had learned about the inside of a computer. I learnt a lot that I did not know it before. Computer is an object can accept input and produce some output. CPU(central processing unit) is the control unit of a computer. It makes decisions and sends appropriate signals down to other parts of the CPU. It also controls the timing of operations in the computer and controls the instruments sent to the processor. ALU(Arithmetic Logic Unit) carries out calculations and logic functions. Registers provides temporary memory storage locations in the CPU. During the class, we also imitate how the inside part of a computer works. Every student was involved in the activity and we could not say a word during the activity. I was a CU(control unit) and I sent messages to the data buses. Then the buses sent the messages to ALU. ALU calculated and sent the it to Display. Finally the Display plotted the x, y value on the display card. CU clock recorded the times we worked. The process was the exactly the way how a computer works inside. I found that it was difficult and it was easy to make mistakes. One little mistake would affect a lot. We must be really careful when we did the process.
Typing Test
During the second class, we took the first typing test during the semester. Although I still did not reach the standard, but I improved a lot. I still need a lot of practice to reach the standard in the next typing test next month. I also practiced my typing skill this week.
Binary Number System
A computer converts its data to information. The data in a computer are stored only in two numbers, one and zero. We learned how to convert decimals to binary number system by roleplaying in the class. We used five cards, 1, 2, 4, 8, 16, and we could make all kinds of number under 31. We could change it to binary number by flipping cards. We also do some activities to know binary number system. We also do a presentation this week which is about unicode.
My friends birthday (Converting it in binary)
2.22 10.10110
10.7 1010.111
1.18 1.10010
12.20 1100.10100
3.23 11.10111
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