Which<br/>of the following devices may be used to de-multiplex the lower<br/>address bus from multiplexed address-data bus of MCS-51?(). A: 74373 B: 74245 C: 74139 D: 74139

The 89C51 extension parallel three bus refers to the address bus, the data bus and

字典data = {'name': '张三', 'age': 18, 'sex': 'M'},能实现修改字典内容的命令是()。 A: data['name']=996 B: data['name']=’Jack’ C: data['address']=’哈尔滨’ D: 以上都对

The width of address bus determines __________. A: word size B: maximum memory capacity of system C: carry data D: control signal

In contrast to general-purpose CPUs, microcontrollers may not<br/>implement an external ( ) or<br/>data bus. A: voltage B: current C: address D: resistance

In our sample microprocessor, we have an address bus （） bits wide and a data bus （） bits wide. A: 8 B: 4 C: 16 D: 32

下列哪项为正确的总线网络标号? A: Data[0~7]。 B: 3com[3-1]。 C: _New[11..2]。 D: Address{0:15}。

下列哪项为正确的总线网络标号? ( ) A: 3com[3-1] B: Address{0: 15} C: Data[0~7] D: New[11..2]

A．E-mail address and IP address B．MAC address and port address C．MAC address and IP address D．port number and IP address

In a CDMA mobile communication system, the address codes allocated by stations A, B and C are (-1-1-1+1+1-1+1+1). (-1-1+1-1+1+1+1-1). (-1+1-1+1+1+1-1-1). At a certain time, when A sends data 0, B sends data 1, C does not send, the receiver receiving station C information receives a signal of ().