John can find the amount of Random Access Memory (RAM) memory installed on his computer with the Windows 7 under the category “<u>System and Security</u>” in the Control Panel.
To know the total amount of installed RAM through Control Panel in the computer with Windows 7, John should follow the steps as:
- Click the category named “System and Security”
- Now under “System”, click “View amount of RAM and processor speed”
- “Device Specifications” section displays the amount of installed RAM in John’s computer
Thus, above are the steps by which John’s can find the amount of installed RAM in his Windows 7 computer’s Control Panel.
What is Random Access Memory (RAM)?
RAM is the temporary memory in computers that stores the data currently being used by the processor.
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Answer:
A. Fetch.
Explanation:
The fetch-decode-execute process of simply the fetch-execute process of the CPU are stages the CPU follow to process information and the switch state or shutdown.
The stages of this process is implied in its name, that is, the stages are fetch, decide and execute.
The fetch stage retrieves the next instruction from the memory.
The decode stage converts the clear text instruction set to electronic signals and transfer it to the appropriate registers.
The execute stage is the action carried out in the arithmetic logic unit.
Answer:
Explanation:
Following are the Semaphores:
Customers: Counts waiting customers;
Barbers: Number of idle barbers (0 or 1)
mutex: Used for mutual exclusion.
Cutting: Ensures that the barber won’t cut another customer’s hair before the previous customer leaves
Shared data variable:
count_cust: Counts waiting customers. ------------copy of customers. As value of semaphores can’t access directly.
// shared data
semaphore customers = 0; semaphore barbers = 0; semaphore cutting = 0; semaphore mutex = 1;
int count_cust= 0;
void barber() {
while(true) { //shop is always open
wait(customers); //sleep when there are no waiting customers
wait(mutex); //mutex for accessing customers1
count_cust= count_cust-1; //customer left
signal(barbers);
signal(mutex);
cut_hair();
}
}
void customer() {
wait(mutex); //mutex for accessing count_cust
if (count_cust< n) {
count_cust= count_cust+1; //new customer
signal(customers); signal(mutex);
wait(barbers); //wait for available barbers get_haircut();
}
else { //do nothing (leave) when all chairs are used. signal(mutex);
}
}
cut_hair(){ waiting(cutting);
}
get_haircut(){
get hair cut for some time; signal(cutting);
}
Answer:
Int
byte
Explanation:
In java there are eight primitive data types has a class dedicated, and then we can find eight wrapper classes, I'm going to let you the next table with the 8 example:
Assume the next table byte and Int are primitive data, the different with byte is only the capital letter Byte.
Primitive Wrapper Class
boolean Boolean
byte Byte
char Character
int Integer
float Float
double Double
long Long
short Short
