List - I List - II (Memory) (Characteristic) A. ROM I. Volatile, Fast, Expensive B. EPROM II. UV erasable C. EEPROM III. Electrically erasable D. SRAM IV. Non-Volatile, permanent data
Choose the correct answer from the options given below :
This question requires matching different types of computer memory with their defining characteristics. Let's analyze each type:
ROM (Read-Only Memory) is designed to store data permanently or semi-permanently. It retains data even when power is turned off, making it non-volatile. Its primary use is for firmware, which requires permanent storage.
EPROM (Erasable Programmable Read-Only Memory) is a type of ROM that can be erased and reprogrammed. The erasure process involves exposing the memory chip to strong ultraviolet (UV) light.
EEPROM (Electrically Erasable Programmable Read-Only Memory) is another type of reprogrammable ROM. Unlike EPROM, it can be erased and reprogrammed using electrical signals, often byte by byte, without needing UV light.
SRAM (Static Random-Access Memory) is a type of volatile memory. It is known for its speed and use in CPU caches. It requires constant power to maintain the stored information; data is lost when power is removed. It is generally more expensive than DRAM.
Based on the analysis, the correct matching is:
Therefore, the correct option is A-IV, B-II, C-III, D-I.
| List - I (Addressing Modes) | List - II (Instruction) |
| A. Immediate Addressing | I. LDAX B |
| B. Register Addressing | II. OUT 01H |
| C. Direct Addressing | III. MVI B, 37H |
| D. Indirect Addressing | IV. MOV A, B |
| List - I | List - II |
| (Bus/Logic) | (Function/Characteristic) |
| A. Address bus | I. Carries read/write signals, timing signals, and interrupt signals |
| B. Data bus | II. A three-state output that can be high, low, or high-impedance |
| C. Control bus | III. Unidirectional lines used by CPU to point to a memory location or I/O device |
| D. Tristate logic | IV. Bidirectional lines used for transferring data between the CPU and memory |