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3 years ago

Why does a computer need memory

Computers and Technology

2 answers:

pickupchik [31]3 years ago

4 0

Answer:

For storage area and to put data

Cerrena [4.2K]3 years ago

3 0

<h2>Question:</h2>

<h3>Why does a computer need memory?</h3>

<h2>Answer:</h2>

<h3>Computer needs memory to store information,data etc. Computer has a fixed memory in which we can store fix amount of data or information, computer memory can be also upgraded for creating more space to store data.</h3>

<h2>Hope my explanation helps you</h2>

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In a batch operating system, three jobs are submitted for execution. Each job involves an I/O activity, CPU time and another I/O

Ilia_Sergeevich [38]

Answer:

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b) CPU utilization for multiprogramming system = 41.379%

Explanation:

IO time = total time – CPU time

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CPU utilization =0.182 or 18.2%

2) In multiprogramming system, jobs wait for the CPU to get free while performing IO operations concurrently

steps followed by the os

1. IO for 1st job at 0ms

2. IO for 2nd job at 0ms

3. IO for 3rd job at 0ms

4. CPU time for 3rd job at 5ms

5. Next IO job for 3rd job at 9ms END at 14ms

6. CPU time for 1st job at 9ms

7. Next IO job for 1st job at 14ms END at 23ms

8. CPU time for 2nd job at 14ms

9. Next IO job for 2nd job at 15ms END at 29ms

CPU time is 3+5+4 =12ms

Total execution time = 29ms

CPU utilization = 12*100/29= 41.379%

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Why does a computer need memory​

Why does a computer need memory