What feature of read-only memory (ROM) renders it useful ?
Show answer Hide answer
Answer: B. Data in ROM is non volatile, that is, it remains there even without electrial power
Explanation
Read-only memory retains stored information permanently without requiring a continuous electrical power supply. Its non-volatile nature ensures critical startup instructions are never lost during power outages. This permanent data retention makes it highly reliable for storing fundamental computer instructions. Memory technologies are broadly categorized as either volatile or non-volatile based on power needs. ROM chips store firmware like the basic input output system used during computer booting. Manufacturing processes physically etch or program data permanently into the silicon storage cells.
Embedded systems rely on ROM to store operational software that must survive battery replacement. Computers boot up successfully because permanent ROM instructions load the primary operating system. Consumer electronics use non-volatile storage to maintain configuration settings without external power. ROM information cannot be easily updated because it is designed for permanent data storage. ROM typically provides relatively small storage capacities compared to modern secondary storage devices. ROM chips are specific to hardware designs and cannot be freely swapped between different brands.
- Subject
- Computer Science
- Category
- Software Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. The working area in a computer allocated for active data processing is ___________________?
Show answer Hide answer
Answer: D. RAM memory
RAM memory provides the fast temporary workspace needed for active data processing. The processor reads instructions and manipulates data directly within this volatile space. Sufficient RAM capacity ensures smooth multit...
Q2. What quantity of bit patterns are supplied by a 7-bit code ?
Show answer Hide answer
Answer: C. 128
A seven-bit binary code provides two raised to the seventh power of unique combinations. Calculating two multiplied by itself seven times yields exactly one hundred twenty-eight patterns. Early character encoding standar...
Q3. How would you define a web browser ?
Show answer Hide answer
Answer: D. all of the above
Web browsers fetch and display web pages by interpreting standard hypertext markup language documents. They provide user interfaces that grant access to vast information resources across the internet. All the listed capa...
Q4. Rewritable optical storage media are typically designated by the acronym ____________________?
Show answer Hide answer
Answer: B. CD-RW
The acronym CD-RW stands for Compact Disc-ReWritable optical storage media. Users can write, erase, and rewrite data onto these discs multiple times. Special phase-change metallic alloy layers allow the laser to modify d...
Q5. The process of obfuscating data for security is called___________________?
Show answer Hide answer
Answer: A. Encryption
Encryption transforms readable plaintext data into unreadable ciphertext for security purposes. Authorized users holding the correct decryption key can reverse the mathematical obfuscation process. This crucial cryptogra...
Q6. What is the purpose of a keyboard ?
Show answer Hide answer
Answer: A. Input text and numbers and send commands to the computer
Keyboards allow users to type letters and numbers while executing specialized computer commands. Pressing individual keys generates electrical signals that the computer interprets as specific characters. It remains one o...