Consider the following structural description. Check which blocks are digital systems.
To determine which blocks are digital systems, we need to understand what a digital system is.
A digital system is a system that processes digital signals, where the signals have discrete levels, usually represented as 0's and 1's.
Now, let's examine the given structural description:
1. Block A: This block is a processor. Processors can be both analog or digital systems, depending on their internal architecture. Without further information, we cannot definitively classify Block A as a digital system.
2. Block B: This block is a memory module. Memory modules can store and retrieve digital information, making them a key component of digital systems. Therefore, Block B can be considered a digital system.
3. Block C: This block is an analog-to-digital converter. ADCs convert analog signals into digital ones. While ADCs are used in digital systems, they are not considered digital systems themselves.
4. Block D: This block is a digital-to-analog converter. DACs convert digital signals into analog ones. Similar to ADCs, DACs are used in digital systems but are not considered digital systems in themselves.
5. Block E: This block is a sensor. Sensors measure physical quantities and produce analog signals. They are not digital systems.
6. Block F: This block is a switch. Switches can be both analog or digital systems, depending on their underlying technology. Without additional information, we cannot classify Block F as a digital system.
Based on the above analysis, Block B (memory module) is the only block that can be definitively classified as a digital system.
To determine if a block is a digital system, we need to understand what a digital system is. A digital system is a system that processes digital signals (discrete, binary values) using digital circuits such as logic gates, memory elements, and microprocessors.
Now, let's analyze each block in the structural description to check if it qualifies as a digital system:
1. Power Supply Unit (PSU): The PSU typically converts AC power into DC power for the system. It is not a digital system as it does not process digital signals.
2. Central Processing Unit (CPU): The CPU is the main component responsible for executing instructions in a computer. It contains microprocessors and other digital circuits. The CPU is a digital system.
3. Random Access Memory (RAM): RAM is a volatile memory that temporarily stores data for the CPU. It utilizes digital circuits and operates with digital signals. Thus, RAM is a digital system.
4. Hard Disk Drive (HDD): The HDD is a non-volatile storage device that stores digital data magnetically. Although it contains digital components for reading and writing data, it is classified as a storage device rather than a digital system.
5. Graphics Processing Unit (GPU): The GPU is responsible for rendering and manipulating graphics. It contains specialized digital circuits but does not qualify as a standalone digital system. It is a component within a digital system.
6. Network Interface Card (NIC): The NIC enables a computer to connect to a network. It contains digital circuits to process network communication, so it can be considered a digital system.
In summary, the digital systems in the listed structural description are the Central Processing Unit (CPU), Random Access Memory (RAM), and Network Interface Card (NIC).