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How computers work - Coggle Diagram
How computers work
中央處理器CPU(central processing unit)
computer's brain
內核
計算
接受/存儲命令
處理數據
控制單元 (CU)
邏輯運算單元(ALU)
解碼(Decode)
擷取(Fetch)
執行(Execute)
暫存器(Register)
以二氧化矽製造矽晶圓,可以切割成很多小塊獨立晶片,在封裝成為不同形式的體積電路,
what makes a computer a computer
storage
processing
input
keyboard
mouse
mic
touch screen
Abstract keyboard
Link Title
)
You can set a wonderful password with it by rolling it on a hard surface.
To be honest, just use a normal keyboard.
Can be taken apart when needed. When taken apart, it will be put back to a normal keyboard.
output
screen
print
speaker
How computer memory works
basic units
0 and 1
0 off
1 on
bits
binary digits
CPU
computer's brain
dynamic RAM=DRAM(most common type of RAM)
it hold charges briefly before they leak away
requiring periodic recharging to retain data
static RAM=SRAM(fastest memory)
most expensive
more space than DRAM
3major types
Processor
takes information from memory
algorithm
a series of command
early computer
made out with
wood
metal
mechanical levers
gears
employees
girls
storage unit
外部記憶體(主記憶體)
RAM(Random Access Memory)
暫時存放程式 指令 資料
電腦的工作空間
增加RAM可以提升電腦效率
關機後資料消失(揮發性)
DRAM(慢但便宜)和SRAM(貴但快)
一樣速度越快價格越貴,壞掉就換一個醬子
ROM(Read Only Memory)
主機板上的晶片
出場就已經設定好
將啟動程式(BIOS)寫在晶片中
不會隨著關機消失(非揮發)
壞掉整台電腦就毀了
內部記憶體(輔助記憶體)
SSD固態硬碟
價格最貴,速度最快
記憶卡
價格中等偏便宜,速度中等偏慢
光碟片
價格最便宜,速度最慢
硬碟
價格中等偏貴,速度中等偏快
速度越快價格越貴