Answer:
Following are the code to this question:
public class M//defining class M
{
public static void main(String[] as)//defining main method
{
int i,j;//defining integer variable
for (i= 1; i <=10; i++)//defining for loop for print column
{
for (j = 1; j<=15; j++)//defining for loop for print rows
{
System.out.print("#");//print # value
}
System.out.println();//print space
}
}
}
Output:
###############
###############
###############
###############
###############
###############
###############
###############
###############
###############
Explanation:
The code defines a class "M" and the main method is defined within a class and two integer variables I and j" are defined within the primary procedure, while the next step defines two for a loop.
In the first loop, the column value is printed, and a further loop that prints the row value is declared inside the loop.
<span>The finished product is "output." In the electronic computer, data are the raw material or input to the computer.</span>
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.
A- White. shows all wavelengths of light.
