Question

(10 pts) Explain why modern computers consist of multiple abstract levels and describe the main functions of each level.

Answer 1

Explain why modern computers consist of multiple abstract levels and describe the main functions of each level?

• Modern computers are required to be fast, efficient and secure due to which the introduction to multiple abstract levels in the system was being necessary due to which the devices were getting up to the mark.
• There are many reasons for using such abstract levels in computers such as:
  • Keeping the machines secure along with multi-tasking and multi-programming functionalities in the computers.
  • It also helped the computers to organize the tasks in perfect order so that the user is being satisfied with the experience.
• The different levels of abstract in the computer are as follows:
  1. Level 6 (User Level):
     • ​​​​​​​This is the level which comprises of the applications which are being used by the users like word processors, graphics, games, etc.
  2. Level 5 (High-Level Languages):
     • ​​​​​​​The high-level languages are the part which most of the developers can write and will help them in developing application that will communicate with the machine.
  3. Level 4(Assembly Languages):
     • ​​​​​​​This level we have assembly languages that give the instructions that translate it to exactly one machine language.
  4. Level 3(System Software):
     • ​​​​​​​This is the level that is being responsible for the features like multi-programming, protecting memory, synchronizing processes, etc.
  5. Level 2(Machine Level):
     • ​​​​​​​This is the level that consists of the machine languages that are the only things which are being recognized by the particular architecture of the computer systems.
  6. Level 1(Control Level):
     • ​​​​​​​The control level comprises of the control unit which ensures that the instructions are being decoded and will be executed properly and all the data will be moved wherever and whenever it should be moved.
  7. Level 0(Digital Level):
     • ​​​​​​​The digital level is where we will be able to find the physical components of the computer system such as gates and wires.

Hence, these are the reasons why multiple abstract levels are the new thing in computers nowadays and what are the functionalities of these levels.