Reliability
•Aliasing
•Writability
Docsity.com
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community
Ask the community for help and clear up your study doubts
University Rankings
Discover the best universities in your country according to Docsity users
Free resources
Our save-the-student-ebooks!
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Implementation Methods - Programming Languages - Lecture Slides, Slides of Programming Languages
Implementation Methods, Compilation, Pure interpretation, Hybrid implementation systems, Issues and tradeoffs, Electronic Numerical Integrator and Calculator, Competing criterion are key points of this lecture. Programming languages is basic subject of computer science. Its not about any specific language but almost cover all of them.
Typology: Slides
2011/2012
1 / 8
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Implementation Methods - Programming Languages - Lecture Slides and more Slides Programming Languages in PDF only on Docsity!
Reliability
- Aliasing
- Writability
Cost
- Training
- Cost of writing programs in the language – productivity
- Programming environment
- Compiling
- Execution
- optimization versus compilation speed
- Cost of language implementation
- Cost of poor reliability
- Maintenance – a function of readability
Implementation Methods
- Compilation
- Pure interpretation
- Hybrid implementation systems
Issues and trade-offs
- Competing criterion
- execution versus safety
- readability versus writability
- a += b;
- a = a + b;
- ( a > b )? a = c: a = d ;
- if ( a > b) a = c; else a = d;
- execution versus compilation
- How to assign weights to different criterion?
ENIAC
(Electronic Numerical Integrator and Calculator)
- Eventually, physical motion was replaced by electrical signals when the US Government built the ENIAC in 1942.
- It followed many of the same principles of Babbage's engine and hence, could only be "programmed" by presetting switches and rewiring the entire system for each new "program" or calculation.
- This process proved to be very tedious.
Von Neumann Architecture - 1945
- "Where a calculator on the ENIAC is equipped with 18 000 vacuum tubes and weighs 30 tons, computers of the future may have only 1 000 vacuum tubes and perhaps weigh 1½ tons." — Popular Mechanics, March 1949.