The control bus contains a control line for write instructions and a control line for reading instructions. When the CPU writes data to the main memory, it transmits a signal to the write command line. The CPU also sends a signal to the read command line when it needs to read.
12. PROM stands for:
programmable read-only memory
programmable read-write memory
programmer read and write memory
none of these
Answer: 1. Programmable read-only memory
Explanation:
A programmable read-only memory (PROM) is a form of digital memory where the contents can be changed once after manufacturing of the device. The data is then permanent and cannot be changed. It is one type of read-only memory (ROM).
13. EPROM stands for:
erasable programmable read-only memory
electrically programmable read-write memory
electrically programmable read-only memory
none of these
Answer: 1. Erasable programmable read-only memory
Explanation:
EPROM, in full erasable programmable read-only memory, form of computer memory that does not lose its content when the power supply is cut off and that can be erased and reused. EPROMs are generally employed for programs designed for repeated use but that can be upgraded with a later version of a program.
14. Each memory location has:
address
contents
both a and b
none of these
Answer: 3. both a and b
Explanation:
Each memory location has both address and content.
Each memory location has a physical address which is a code. The CPU (or another device) can use the code to access the corresponding memory location. The only thing that can be stored at one memory location is eight bits, each with a value of “0” or “1”. The bits at a memory location are called the contents of that location.
15. Which is the type of microcomputer memory?
processor memory
primary memory
secondary memory
all of these
Answer: 4. all of these
Explanation:
A microcomputer uses memory to store the programs that control its operation, to store data waiting for processing, and store the results of operations performed by the CPU. Primary memory, or storage, is electronic memory that is directly addressable by the CPU.
The type of microcomputer memory is
Processor memory
Primary memory
Secondary memory
16. Secondary memory can store ____
program store code
compiler
operating system
all of these
Answer: 4. All of these
Explanation:
Secondary storage data resides on non-volatile memory (NVM) devices such as SSDs, HDDs, tape drives, and optical media. It can store and retain data, even if the computer is not connected to electrical power. Secondary memory can store programs store, code compilers, operating systems ETC.
17. Secondary memory is also called____:
auxiliary
backup store
both a and b
none of these
Answer: 3. both a and b
Explanation:
Secondary memory is also called Auxillary or Backup store. Secondary storage data resides on non-volatile memory (NVM) devices such as SSDs, HDDs, tape drives, and optical media.
18. The RAM which is created using bipolar transistors is called:
dynamic ram
static ram
permanent ram
ddr ram
Answer: 2. static ram
Explanation:
The RAM which is created using bipolar transistors is called static ram. SRAM (static RAM) is random access memory (RAM) that retains data bits in its memory as long as power is being supplied. Unlike dynamic RAM (DRAM), which stores bits in cells consisting of a capacitor and a transistor, SRAM does not have to be periodically refreshed.
19. Which type of RAM needs regular refresh:
dynamic ram
static ram
permanent ram
sd ram
Answer: 1. dynamic ram
Explanation:
Dynamic ram needs a regular refresh. Memory refresh is a background maintenance process required during the operation of semiconductor dynamic random-access memory (DRAM).
20. Which RAM is created using MOS transistors:
dynamic ram
static ram
permanent ram
sd ram
Answer: 1. dynamic ram
Explanation:
Dynamic ram is created using MOS transistors. Dynamic random-access memory (dynamic RAM or DRAM) is a type of random-access semiconductor memory that stores each bit of data in a memory cell, usually consisting of a tiny capacitor and a transistor, both typically based on metal-oxide-semiconductor (MOS) technology.
