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【简答题】
We are now in an inter-disciplinary integration era, the pervasion and cooperation among disciplines has become a general trend for the development of science. We wouldn't have today's advanced computer graphics systems if mathematician hadn't been able to solve problems related to surface geometric. We wouldn't have networks capable of handling massive amounts of data if physicists and astronomers hadn't continuously forged tools to look more deeply into subatomic structures and the cosmos. Chemists' efforts to simulate complex phenomena and predict the properties of many-electron systems have inspired massively parallel architectures for computing. And the information made available by the sequencing of the human genome has caused us to rethink how to store, manipulate, and retrieve data most effectively. It will take new insights from studies of human cognition, linguistics, neurobiology, computing, and more to develop systems that truly augment our capacity to learn and create.
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【单选题】若4位倒T形电阻网络D/A转换器,输入数字量0001时对应的输出电压为0.1V,则输出电压为0.6 V时,输入数字量应为( )。
A.
0011
B.
1010
C.
1001
D.
0110
【单选题】4 位倒 T 形电阻网络 DAC 的电阻网络的电阻取值有( )种。
A.
1
B.
2
C.
4
D.
8
【单选题】若 4 位倒 T 形电阻网络 D/A 转换器,输入数字量 0010 时对应的输出电压为 0.2V ,则输入数字量为 1010 时,输出电压应为( )。
A.
0.1V
B.
0.5V
C.
1V
D.
2V
【单选题】若 4 位倒 T 形电阻网络 D/A 转换器,输入数字量 0001 时对应的输出电压为 0.1V ,则输出电压为 1.2 V 时,输入数字量应为 ( ) 。
A.
1001
B.
1010
C.
1011
D.
1100
【单选题】在下图所示的4位倒T形电阻网络D/A转换器中,Rf=R,VREF=20V,试分析当D3D2D1D0取0010时,输出电压VO的值? 【图片】
A.
-2.5V
B.
-10V
C.
-5V
D.
-1.25
【单选题】若 4 位倒 T 形电阻网络 D/A 转换器,输入数字量 0100 时对应的输出电压为 0.8V ,则输出电压为 2V 时,输入数字量应为 ( ) 。
A.
1001
B.
1010
C.
1011
D.
1100
【简答题】在如图8.1.2所示4位倒T形电阻网络D/A转换器中,已知VREF1=10 V,R=10 kΩ;当D3D2D1D0=1111时[*]则运放的反馈电阻Rf为________________V kΩ。 [*]
【单选题】加油站应定期进行油品盘点。油品盘点分为()、月盘点、抽查盘点、季度盘点和年终盘点等。
A.
日盘点
B.
周盘点
C.
交接班盘点
【单选题】4 位 倒 T 形电阻网络 D/A 转换电路中,已知 V REF =- 8 V , 当 d 3 d 2 d 1 d 0 =1000 时 ,在输出端所产生的模拟电压值 为
A.
-4V
B.
4V
C.
-2V
D.
2V
【单选题】按照盘点的时间划分,可以分为() ①人工盘点②自动盘点③临时盘点④期末盘点 ⑤缺料盘点⑥永续盘点⑦循环盘点
A.
①②③④
B.
③④⑥⑦
C.
③④⑤⑥
D.
③④⑤⑦
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