Tb143 - Unit 2 - Quiz 1

Explanation
The transistor is important to digital electronics because it provides a switching mechanism to enable binary on/off processing. Transistors can be used as electronic switches, allowing current to flow or not flow depending on the input signal. This binary on/off capability is fundamental to digital processing, where information is represented in the form of binary digits (bits). By controlling the flow of current through transistors, digital devices can perform calculations, store data, and execute logical operations.

Explanation
The 8088 processor was indeed used in the original IBM PC. The IBM PC, released in 1981, was one of the first personal computers to become widely popular, and it used the 8088 processor as its central processing unit (CPU). The 8088 was a 16-bit microprocessor and played a significant role in the early development of personal computers. It had a clock speed of 4.77 MHz and was capable of executing a wide range of tasks, making it a suitable choice for the original IBM PC.

Explanation
Preemptive multitasking refers to the operating system's ability to interrupt a running task and allocate the processor to another task. In this type of multitasking, the operating system decides when a task will be given control to run, based on factors like priority levels, time slices, or event triggers. This allows for efficient utilization of system resources and ensures that all tasks get a fair share of CPU time. The other options mentioned in the question, such as tasks deciding when to give control to another task or tasks running simultaneously until completion, do not accurately describe preemptive multitasking.

Explanation
Static RAM (SRAM) is a type of RAM that does not require constant electrical refreshing. Unlike dynamic RAM (DRAM), which needs to be refreshed periodically to maintain data integrity, SRAM can hold data as long as power is supplied to it. It is called "static" because the data remains static or unchanged until it is overwritten. SRAM is faster and more expensive than DRAM but is commonly used in cache memory and other applications where speed and stability are crucial.

Explanation
The correct answer is "ROM that can be written many times." EEPROM stands for Electrically Erasable Programmable Read-Only Memory. It is a type of non-volatile memory that can be electrically erased and reprogrammed. Unlike traditional ROM, EEPROM allows for multiple write operations, making it a versatile and flexible storage option for various applications.