<>
Learning objectives ：
Memory capacity , Calculation method of start address or end address
<>
Learning content ：
Memory is addressed in bytes , So the unit is bytes （byte,bytes）,1 Bytes are equal to 8 position （bit） of .
Because the scope of calculation is generally small , So just remember two .
Remember a few common 2 of 10 The power is 1024 Namely 1KB
12bit-->2^12=4096byte,
G representative 2^10 x 2^10 x2^10 = 2^30.
formula :
Memory capacity = End address - First address +1
<>
How to calculate with a calculator ：
（1） Turn on the calculator on your computer
（2） Show with pictures
Click the in the upper left corner “ three ” Find programmer （programer）
<>
Learning output ：
Take examples as evidence ：
（1）
Capacity 4K
4K*8bit = 4KB Namely 2 Square times 2 of 10 Power ,2 of 12 Power ,12/4=3（ Turn into 16 Base system ） Namely 1000H
01000H= End address -6800H+1H
End address =01000H+6800H-1H
End address =077FFH
（2）SRAM Start from 20000000H, Capacity 20kBytes, Calculation end address
20*1024=20480————=5000H
5000H=?-20000000+1
?=20004FFF
Technology