Paragraph 4 tells us that _________.
Paragraph 4 tells us that _________.
fosc=6MHz时,一个机器周期=4us
fosc=6MHz时,一个机器周期=4us
合并单元正常情况下对时精度应为(),守时精度范围为()。 A: ±1us,±2us B: ±1us,±4us C: ±2us,±2us D: ±2us,±4us
合并单元正常情况下对时精度应为(),守时精度范围为()。 A: ±1us,±2us B: ±1us,±4us C: ±2us,±2us D: ±2us,±4us
电路如图所示,已知us(t)=4ε(t)V,求:
电路如图所示,已知us(t)=4ε(t)V,求:
把图 1 所示的电路用图 2 所示的等效电压源代替,则等效电压源的参数为 ( )。[img=514x251]18037b09233118d.jpg[/img] A: US = 4 V,R = 2 Ω B: US = 1 V,R = 0.5 Ω C: US = -1 V,R = 0.5 Ω D: US = -4 V,R = 0.5 Ω
把图 1 所示的电路用图 2 所示的等效电压源代替,则等效电压源的参数为 ( )。[img=514x251]18037b09233118d.jpg[/img] A: US = 4 V,R = 2 Ω B: US = 1 V,R = 0.5 Ω C: US = -1 V,R = 0.5 Ω D: US = -4 V,R = 0.5 Ω
The US Constitution was officially adopted on March 4, ______. A: 1776 B: 1781 C: 1787 D: 1789
The US Constitution was officially adopted on March 4, ______. A: 1776 B: 1781 C: 1787 D: 1789
合并单元的守时精度应为多少() A: ¡À1us B: ¡À2us C: ¡À3us D: ¡À4us
合并单元的守时精度应为多少() A: ¡À1us B: ¡À2us C: ¡À3us D: ¡À4us
Now it’s 4:50 already, and the rain (pour) down like this. They must be waiting for us impatiently.
Now it’s 4:50 already, and the rain (pour) down like this. They must be waiting for us impatiently.
已知Uc=8V,则Us=() A: 8V B: 4√2V C: 8√2V D: 12V
已知Uc=8V,则Us=() A: 8V B: 4√2V C: 8√2V D: 12V
<p>( )指令是MCS-51指令系统中执行时间最长且长达4 us的。</p>
<p>( )指令是MCS-51指令系统中执行时间最长且长达4 us的。</p>