1 Mermory 若為 4 Kbyte

最大Address(max) = 3FF(H)

K = 2(10) 位址線數

11 1111 1111(max)

1023(D)~0(D)

3FFF(H)~000(H) = 1K Memory

若 Memory 為 64 Kbyte

Adderss(max) = FFFF(H)

64 Kbyte = 0K~63K

63(2) = 11111

1 Kbyte　= 11 1111 1111

63 Kbyte = 11111 11 1111 1111

　　　　 = 111 1111 1111 1111 1111 = 7FFFF

若 Memory 為 512 Kbyte 其 Address(max) = 3FFF(H)

512 kbyte = 1kbyte~511kbyte

相當於 11111111 1111111111 = 3FFFF(H)

若 Memory = 1 Mbyte Address = FFFFF(H)

1 Mbyte = 0kbyte~1024kbyte

K = 11 1111 1111 = 3FF

K x K = M

11 1111 1111 x 11 1111 1111 = FFFFF(H)

若 256 Mbyte Address(max)

0kbyte~255kbyte

255 Mbyte = FF

M = FFFFF

256 Mbyte = FFFFFFF(H)

K x M = G

K x G = T