Question: Can You Execute Code Directly From Storage?

What is instruction execution?


instruction execution – (computer science) the process of carrying out an instruction by a computer.


physical process, process – a sustained phenomenon or one marked by gradual changes through a series of states; “events now in process”; “the process of calcification begins later for boys than for girls”.

Which is the fastest memory?

Fastest memory is cache memory.Registers are temporary memory units that store data and are located in the processor, instead of in RAM, so data can be accessed and stored faster.More items…

Where is machine code stored?

Harvard architecture is contrasted to the Von Neumann architecture, where data and code are stored in the same memory which is read by the processor allowing the computer to execute commands. From the point of view of a process, the code space is the part of its address space where the code in execution is stored.

What is between RAM and ROM?

RAM, which stands for random access memory, and ROM, which stands for read-only memory, are both present in your computer. RAM is volatile memory that temporarily stores the files you are working on. ROM is non-volatile memory that permanently stores instructions for your computer.

Where a program is stored and executed?

Programs are stored on secondary storage devices such as hard disks. When you install a program on your computer, the program is actually copied to your hard disk. But when you execute a program, the program is copied (loaded) from your hard disk to the main memory, and that copy of the program is executed.

How a process is executed?

In computing, a process is the instance of a computer program that is being executed by one or many threads. It contains the program code and its activity. Depending on the operating system (OS), a process may be made up of multiple threads of execution that execute instructions concurrently.

What in general happens when a computer program is executed?

Once the program begins execution it is entirely copied to the RAM. … Then the processor retrive a few instructions (it depends on the size of the bus) at a time, puts them in registers and executes them.

Is a program stored in RAM?

Both RAM and hard drive memory are referred to as memory, which often causes confusion. RAM stands for Random Access Memory. Physically, it is a series of chips in your computer. … Programs that are currently running, and open files, are stored in RAM; anything you are using is running in RAM somewhere.

Is an example of a secondary memory device?

Examples of secondary storage devices include external hard drives, USB flash drives, and tape drives. … Examples of secondary storage media include recordable CDs and DVDs, floppy disks, and removable disks, such as Zip disks and Jaz disks.

How instructions are executed in computer?

Program Execution in the CPUA sequence of instructions is stored in memory.The memory address wherever the first instruction is found is copied to the instruction pointer.The CPU sends the address within the instruction pointer to memory on the address bus.The CPU sends a “read” signal to the control bus.More items…•

Is USB a secondary storage?

Secondary memory refers to storage devices, such as hard drives and solid state drives. It may also refer to removable storage media, such as USB flash drives, CDs, and DVDs. Additionally, secondary memory is non-volatile, meaning it retains its data with or without electrical power. …

Is it possible to see information about a process while it is being executed?

Is it possible to see information about a process while it is being executed? yes,it can be done. yes .! Every process is recognized by a process identifier.

When the process enters the system it is put into?

Two-State Process Model S.N. When a new process is created, it enters into the system as in the running state. Processes that are not running are kept in queue, waiting for their turn to execute. Each entry in the queue is a pointer to a particular process.

Which memory is needed to execute the program?

Answer: The programs and data that the CPU requires during execution of a program are stored in this memory. It is a volatile memory as the data loses when the power is turned off. RAM is further classified into two types- SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory).

When a program is executed it is called as?

A program in execution is called a process.

What are two steps of process execution?

As shown in Figure 5.2, a process instance has three main stages during its lifetime: (1) process instantiation, (2) process execution and (3) process termination.

Which memory is needed to store data permanently?

This kind of storage is called volatile memory and allows your RAM to create fresh space for new processes and applications. In contrast, data stored to ROM is permanently written and stays on the chips even when your computer has no power.

Where is the first program that a computer runs stored?

First, your computer CPU starts and fetches instructions from the BIOS stored in your ROM. The BIOS start the monitor and keyboard. It also performs some basic checks to make sure your computer is working properly.