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What are the benefits and the disadvantages of each of the following Consider both the system level and the programmer level Synchronous and asynchronous communication?
Synchronous communication ensures data integrity and order but can lead to potential bottlenecks as both the sender and receiver must be available simultaneously. Asynchronous communication allows for greater flexibility and scalability but can be complex to implement due to potential data integrity and order issues. At the system level, synchronous communication is more deterministic and easier to manage, while asynchronous communication offers better performance and fault tolerance. At the programmer level, synchronous communication is simpler to implement and debug, while asynchronous communication requires more careful design and handling of potential race conditions.
Difference between synchronous bus and asynchronous bus in an input operation?
A synchronous bus operates with a clock signal that coordinates data transfer, ensuring that all components are synchronized during input operations. In contrast, an asynchronous bus does not rely on a clock signal; instead, it uses handshaking signals to manage data transfer, allowing devices to operate independently and at different speeds. This can lead to more flexible communication but may introduce complexity in timing and control. Essentially, synchronous buses provide predictability and speed, while asynchronous buses offer flexibility and adaptability.
What are synchronous and asynchronous network terminating units?
Synchronous network terminating units (NTUs) operate in real-time, ensuring that data is transmitted and received simultaneously, which is crucial for applications requiring precise timing, such as voice and video communications. In contrast, asynchronous NTUs do not require synchronization between the sender and receiver, allowing for more flexible data transmission that can handle variable data rates and is often used in applications like email or file transfers. The choice between synchronous and asynchronous NTUs depends on the specific requirements of the network and the types of data being transmitted.
What is the advantage and disadvantage of a synchronous counter over an asynchronous counter?
1. Easier to design 2. No propagation delay Actually the second one is the most important reason. In designing circuits that work at high clock rates, ripples will result in errors so synchronization is very very important.
What does asynchronous have to do with getting an online education?
Asynchronous simply means that students and professors access the classroom at any time that is convenient for them. If the class was synchronous, it would mean that you would have to attend class at a specific time. Asynchronous courses make it much easier to attend class when it is more convenient for you. Online education courses are often offered as asynchronous so that they are flexible for students who want to attend at all times of the day or night.
What is the difference synchronous buses and non synchronous buses?
Synchronous buses use a clock signal to synchronize data transfers between components, ensuring that data is transferred at a predictable rate. Non-synchronous buses transfer data without a clock signal and rely on other mechanisms to coordinate data transmission. Synchronous buses are generally faster and more efficient but can be more complex to design and implement compared to non-synchronous buses.
What is the difference between uart and usart?
UART is universal asynchronous receiver/transmitter. It is a piece of computer hardware that translates data between parallel and serial forms. Modern ICs that have UART's that can also communicate synchronously are called USARTs (universal synchronous/asynchronous receiver/transmitter).
Why asynchronous TDM is better than synchronous TDM?
Asynchronous Time Division Multiplexing (TDM) is often considered better than synchronous TDM because it allows for more efficient bandwidth utilization. In asynchronous TDM, data packets are transmitted as they arrive, regardless of fixed time slots, which means that idle time is minimized and bandwidth can be allocated dynamically based on demand. This flexibility leads to improved overall network performance, especially in environments with variable traffic loads. Additionally, it reduces the overhead associated with managing fixed time slots, making it more adaptable to varying data rates.
What are the features of data communication equipment with respect to synchronous and asynchronous data?
Data communication equipment (DCE) supports both synchronous and asynchronous data transmission, each with distinct features. Synchronous communication relies on a shared clock signal, allowing for faster and more efficient data transfer, as it can send multiple bits simultaneously in a continuous stream. In contrast, asynchronous communication sends data one byte at a time, using start and stop bits to indicate the beginning and end of each byte, which simplifies timing but can be slower and less efficient. DCE typically includes interfaces and protocols to accommodate both types, ensuring compatibility across various systems and applications.
What are the differences between synchronous and asynchronous?
Synchronous AC motors run at a speed fixed by the input line frequency. Typically 60 Hz in the USA. Run a clock with the sync motor from the USA in England and it runs slow because they use 50Hz. Asynchronous motors run at whatever free-run speed they feel like, and slow under load. A DC wound hand-drill is such a motor, runs pretty fast till you start drilling, then it slows down. A synchronous motor will develop maximum power at its' designed speed, try to slow it down and it puts out more torque. Slow it down by overload, it doesn't create more power, it just creates more heat. An Async motor creates highest torque at stall speed, least torque as it approaches maximum speed.
What is the definition of a synchronous computer and how does it differ from an asynchronous computer?
A synchronous computer is a type of computer where all operations are coordinated by a clock signal. This means that all components of the computer work in a synchronized manner, following the same clock signal. On the other hand, an asynchronous computer does not rely on a central clock signal to coordinate operations. Instead, each component operates independently and communicates with each other using handshaking signals. This allows for more flexibility and potentially faster operation, but can also be more complex to design and implement.
What are differences between asynchronous counter and synchronous counter?
Synchronous CountersSynchronous counters typically consist of a memory element, which is implemented using flip-flops, and a combinational element, which is traditionally implemented using logic gates. Logic gates are logic circuits with one or more input terminals and one output terminal, in which the output is switched between two voltage levels determined by a combination of input signals. The use of logic gates for combinational logic typically reduces the cost of components for counter circuits to an absolute minimum, so it remains a popular approach.Clock PulseSynchronous counters have an internal clock, whereas asynchronous counters do not. As a result, all the flip-flops in a synchronous counter are driven simultaneously by a single, common clock pulse. In an asynchronous counter, the first flip-flop is driven by a pulse from an external clock and each successive flip-flop is driven by the output of the preceding flip-flop in the sequence. This is the essential difference between synchronous and asynchronous counters.Asynchronous CountersAsynchronous counters, also known as ripple counters, are the simpler type, requiring fewer components and less circuitry than synchronous counters. Asynchronous counters are easier to construct than their synchronous counterparts, but the absence of an internal clock also introduces several major disadvantages. The flip-flops in an asynchronous counter change states at different times, so the delays in changing from one state to another -- known as propagation delays -- add up to create an overall delay. The more flip-flops an asynchronous counter contains, the greater the overall delay.ConsiderationsTypically, asynchronous counters are less useful than synchronous counters in complex, high-frequency systems. Some integrated circuits react faster than others, so if an external event occurs close to a transition between states -- when some, but not all, the integrated circuits have changed state -- it may introduce errors into the counter. Such errors are difficult to predict because of the randomly variable time difference between events. Furthermore, propagation delays can make it difficult to detect, or decode, the output state of an asynchronous counter circuit electronically.
