The
baud rate of serial transfer using Mode 0 of 8051 running at 6MHz
clock frequency is()
A: fixed
at 256Kbps
B: fixed
at 512Kbps
C: variable
with maximum with 256Kbps
D: variable
with maximum with 512Kbps
baud rate of serial transfer using Mode 0 of 8051 running at 6MHz
clock frequency is()
A: fixed
at 256Kbps
B: fixed
at 512Kbps
C: variable
with maximum with 256Kbps
D: variable
with maximum with 512Kbps
B
举一反三
- EIA<br/>RS-232的接口标准有两个较大的弱点:数据的传输速率最高仅为,连接电缆的最大长度不超过()。 A: 40 Kbps,15m B: 20 Kbps,20<br/>m C: 20 Kbps ,15m D: 40 Kbps,20<br/>m
- Which<br/>of the following is the Y-axis of the histogram?() A: frequency B: relative<br/>frequency C: relative<br/>frequency density D: values<br/>of a variable E: rate
- The<br/>vertical axis of the histogram is () A: Frequency B: Relative<br/>frequency C: Relative<br/>frequency density D: The<br/>values of a variable E: The<br/>intervals of a variable
- () are<br/>real assets. A: Land B: a<br/>fixed level of income for the life of the owner. C: Machines D: a<br/>variable level of income for owners on a fixed income. E: Stocks<br/>and bonds F: a<br/>fixed or variable income stream at the option of the owner. G: Knowledge H: a<br/>fixed stream of income or a stream of income that is determined<br/>according to a<br/>specified<br/>formula for the life of the security. I: Land,<br/>machines, and knowledge<br/>A<br/>debt security pays (D)
- For<br/>a bar chart, we take _____ as the horizontal axis. () A: frequency B: relative<br/>frequency C: relative<br/>frequency density D: values<br/>of a variable
内容
- 0
用PCM对语音进行数字化，如果将声音分为256个量化级，采样频率为44.1kHz，那么一路话音需要的数据传输率为______。 A: 256 kbps B: 512 kbps C: 352.8kbps D: 11289.6kbps
- 1
Which<br/>of the following can be used as the Y-axis of the bar chart? () A: frequency B: relative<br/>frequency C: relative<br/>frequency density D: values<br/>of a variable
- 2
In<br/>a strain ellipsoid for rock deformation, the maximum strain axis is<br/>parallel to() A: the<br/>maximum flattening surface B: the<br/>maximum tensile surface C: the<br/>maximum stretching direction of minerals D: the<br/>maximum shearing surface
- 3
单路标准PCM电话系统的数据传输速率为（ ）。 A: 32 kbps B: 48 kbps C: 64 kbps D: 96 kbps
- 4
带宽为 6 kHz，信噪比为 20 dB 的信道，发送二进制信号时的最大数据传输率是_______。 A: 20.76 kbps B: 26.35 kbps C: 39.95 kbps D: 45.91 kbps