Answer:
1. Processor communication -- this involves the following tasks:
<em>a. exchange of data between processor and I/O module</em>
<em>b. command decoding - I/O module accepts commands sent from the processor. E.g., the I/O module for a disk drive may accept the following commands from the processor: READ SECTOR, WRITE SECTOR, SEEK track, etc. </em>
<em>c. status reporting – The device must be able to report its status to the processor, e.g., disk drive busy, ready etc. Status reporting may also involve reporting various errors. </em>
<em>d. Address recognition – Each I/O device has a unique address and the I/O module must recognize this address. </em>
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2. Device communication – The I/O module must be able to perform device communication such as status reporting.
3. Control & timing – The I/O module must be able to co-ordinate the flow of data between the internal resources (such as processor, memory) and external devices.
4. Data buffering – This is necessary as there is a speed mismatch between speed of data transfer between processor and memory and external devices. Data coming from the main memory are sent to an I/O module in a rapid burst. The data is buffered in the I/O module and then sent to the peripheral device at its rate.
5. Error detection – The I/O module must also be able to detect errors and report them to the processor. These errors may be mechanical errors (such as paper jam in a printer), or changes in the bit pattern of transmitted data. A common way of detecting such errors is by using parity bits.
Answer:
All of these choices
Explanation:
Clarity → the quality of being coherent and intelligible.
Sincerity → the quality of being free from pretense, deceit, or hypocrisy
Open mind → Open-mindedness is receptiveness to new ideas.
ZRX is the purchase requisition document type used to turn a recoverable repairable material for Remote customers to the SSA.
What is a purchase requisition?
Employees can start a purchase by sending internal documents called buy requisitions. A buy order is issued to a supplier to place the order for the goods/services in question once the purchase has received the relevant person or department's approval.
What is the purpose of a purchase requisition?
A purchase request form is a formal internal document that is utilized during the purchasing process. Employees utilize this to communicate the resources they require to department supervisors. Therefore, an employee will submit a formal request via a requisition form to the purchasing department if they have a requirement.
Learn more about purchase requisition: brainly.com/question/16413109
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<span>Beside homework, what products can you use for personal use? Identify three uses and briefly describe.
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