Lectures 01 to 03

Lectures 01 to 03 - 1-The position of High Level...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1-The position of High Level Languages(HLLs) in the Computer System:Discussion: HLLs allow us to feasibly utilize the hardware (black-box) for the implementation of the toughest algorithmic solutions of most problems that we face. I) Micro-level: Micro coding at the micro architecture, in the micro programmable machines (where a ROM stores all micro routines that encodes the macro-level machine instruction set). Very fast execution of code, yet very tough to code, read, and maintain. Three levels of machine programming: II) Macro-level: Macro (assembly) level architecture, easier to read the individual mnemonic assembly instruction, but tough to guess the program purpose (goal). It is a pseudo virtualmachine that abstractsthe micro level to the macro level programmers. III) HLL-level: The third layer that works, again, as a virtualmachine. It abstracts the details of the underlying micro/macro levels to the higher level programmers, presenting English like programming language (HLL) syntax. It is called HLL since it is up high above the hardware level, making the language much lesser hardware dependent. Remember-- As we elevate from the core hardware (H/W) we get "higher" in the language abstraction, i.e., lesser dependency on the H/W, for better readability and ease of software (S/W) design (modularity and maintenance); yet we lose speed of code execution (why?).2- Why Should we Study HLLs? i)Better understanding of their features, allowing us, when the need arises, to have a "smart" choice of the best HLL for the implementation of any algorithmic solution....
View Full Document

This note was uploaded on 08/23/2011 for the course CSE 324 taught by Professor Soliman during the Spring '11 term at NMT.

Page1 / 10

Lectures 01 to 03 - 1-The position of High Level...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online