CMSC131Lab slides

Tak

Sep 8th

Hardware and Software

Different hardwares, Same software

http://en.wikibooks.org/wiki/A-level_Computing/AQA/Computer_Components,_The_Stored_Program_Concept_and_the_Internet/Fundamentals_of_Computer_Systems/Hardware_and_software

Softw

are

layers

Softw

are

layers

CPU

Memory Main

Secondary

I / O

Network

1

2

3

4 5

6

QUESTION!

How many numbers can we count with ten fingers?

Each finger has two states: (folded or not)

ASCII (American Standard Code for Information Interchange)

Program Language Generatinos

1st. Machine Code

Program Language Generatinos

2nd Assembly

Program Language Generatinos

3rd Fortran, COBOL, C, C++, Java

Program Language Generatinos

4th Application / Domain-specific languages (SPSS, SQL, Mathematica)

SQL

Mathematica

Program Language Generatinos

5th Constraint / Logic programming(e.g. Prolog, Haskell, ML, ...)

C machine code