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In advance operating system what is process synchronization?
In computer science, especially parallel computing, synchronization means the coordination of simultaneous threads or processes to complete a task in order to get correct runtime order and avoid unexpected race conditions. There are many types of synchronization: * barrier * lock/semaphore * non-blocking synchronization * synchronous communication operations advantages of synchronous communications are * no need of start and stop bits * higher data rates possible * the actual data length need not be fixed
Why start and stop bit affect the efficiency of data transmission?
Start and stop bits are used in asynchronous transmission to indicate the beginning and end of a data byte. While they help ensure data integrity and synchronization between sender and receiver, they also introduce overhead, as additional bits are transmitted with each byte. This overhead reduces the overall efficiency of data transmission, especially in high-speed applications, as the proportion of actual data to control bits decreases. Consequently, more bits are needed to transmit the same amount of information, leading to lower effective data rates.
How fast is 200 kbps?
200,000 bits of information a second. A data byte has 8 data bits, a start bit and one or two stop bits.
How efficient would a 6-bit code be in asynchronous transmission if it had two parity bits (one for each nibble) 1 start bit and one stop bit.?
In asynchronous transmission using a 6-bit code with two parity bits (one for each nibble), one start bit, and one stop bit, the total number of bits transmitted per codeword would be 10 bits (6 data bits + 2 parity bits + 1 start bit + 1 stop bit). This results in a data efficiency of 60% (6 bits of actual data out of 10 total bits). This means that for every 10 bits transmitted, only 6 bits are useful data, making it less efficient compared to systems with fewer overhead bits.
What is the purpose of a start bit in rs232 serial communication protocol?
start bit signals receiver end to receive sequence of bits(data bits) and stop bit to signal the end of bit transmission.
Why is it that the start and stop bits can be eliminated when character interleaving is used in synchronous TDM?
Because it reassigns time slots and fix it
What is the efficiency of ascii character using asynchronous data with two stop bits?
The efficiency of ascii characters using asynchronous data transfer protocol with two stop bits is 8 in 11, or 72%. There is one start bit, eight data bits*, and two stop bits. That is 11 bit cells, in which a payload of 8 bits is possible, hence the 8 in 11. *Actually there are only 7 data bits in ASCII... latin-1 and several other incompatible extensions to ASCII have 8. Which one is in use varies between languages - many European countries use different encodings which have the same meanings for the first 128 characters but different for the second 128 depending on what extra characters are required in the language in question. If the payload was 7 bits, for pure ASCII, then the efficiency with one start bit and two stop bits would be 7 in 10, or 70%.
Can an error 54 cause a car to stop and not start again How can it be fixed?
don,t know if this helps, but code 54 means there is no camshaft position signal / or a problem with the camshaft synchronization circuit.
A Suppose that a sender and receiver use asynchronous transmission and agree not to use any stop elements Could this work?
Not for asynchronous transmission. The stop bit is needed so that the start bit can be recognized as such. The start bit is the synchronization event, but it must be recognizable. The start bit is always a 0, and the stop bit is always a 1, which is also the idle state of the line. When a start bit occurs, it is guaranteed to be different from the current state of the line.
What are the similarities and differences between synchronous and asynchronous transmission modes?
Asynchronous transmission refers to the case when the sending initiate transmission of byte at any instant of time. In asynchronous transmission only one byte is sent at a time and there is no time relation between consecutive bits. This transmission is also referred to as start-stop transmission.This is achieved by providing two extra bits, a start bit at the beginning and a stop bit at the end of a byte. The start bit always "0" and is prefixed to each byte. The stop bit is always "1" and also suffixed to each byte usually 1,1.5 or 2 bits.ANSWERED BY= SATISH KUMAR (AKASH VERMA) [LUCKNOW UNIVERSITY LUCKNOW]
Explain the type of error which will be detected when using parity error checking on a serial link?
if the stop bits does not appear when it is supposed to, the UART considers the entire word to be garbled and will report a framing error regardless of the whether the data was received correctly or not, the UART automatically discards the start,parity and stop bits.
What is time in sending the message BADF00D5 in hexa using serial transmitter?
The time taken to send the message "BADF00D5" in hexadecimal using a serial transmitter depends on the baud rate (bits per second) and the number of bits in each character. Each hexadecimal character is typically transmitted as 4 bits, and if you include start and stop bits, each character may take 10 bits total (1 start bit, 8 data bits, and 1 stop bit). For example, at a baud rate of 9600 bps, sending 8 characters would take approximately ( \frac{80 \text{ bits}}{9600 \text{ bps}} \approx 0.0083 ) seconds, or 8.3 milliseconds. Adjust the calculation based on the specific baud rate used.
