cit入

Fires

點計??
08 第7條
第9
10
27
28
32
33
34
35
36

[ 本帖最後由 Fires 於 2009-4-22 06:52 PM 編輯 ]

一一峰少一一

第7唔識--
第9題dvd rw 冇分7200轉呢d 好似係16x,20x,22x 呢d
,總之頭3個都岩啦-_-"

惡魔DeviL

原帖由 Fires 於 2009-4-22 06:48 PM 發表
點計??
08 第7條
第9
10
27
28
32
33
34
35
36

d圖無左上半部既-,-''

第9條係D

hkyingho0223

第7條我都唔明點計..我一開始選9bits.

ans係b

If a binary code is used to represent a command of the car, what is the minimum number of bits required for the code?

A. 4
B. 5
C. 8
D. 9

===========================================
Answer: B

Total number of commands = 17
e.g. Left 1, Left 2, ... Backward 2, Backward 3

Number of bits required:
2^4 = 16 => Less than 17 => Wrong
2^5 = 32 => greater than or equal to 17 => Correct!

[ 本帖最後由 hkyingho0223 於 2009-4-23 12:01 AM 編輯 ]