# PPSC Test Preparation for Lecturer Computer Science Session 13 | DLD part 2

PPSC Lecturer computer Science Test Preparation Session 13 | Digital Logic and Design Concepts. This video lecture is compiled as per tentative PPSC Lecturer Computer science Syllabus. For Online Quiz, PDF Notes visit In today Session No 13 recorded for test preparation of PPSC Lecturer Jobs for the subject of Computer Science.

Weill talk about Number system, 1’s complement and hexadecimal number conversion. As I have mentioned in the yesterday’s video description that applications procedure of PPSC jobs 2020 for lecturer posts has been completed. Now aspirants are looking test preparation syllabubs, pdf download, online video lectures.

### PPSC Test Preparation for Lecturer Computer Science Session 13

We are providing free online ppsc test preparation for upcoming PPSC lecturer computer Sciences test preparation. Therefore, we have started this PPSC Test Preparation Online Free Videos for the subject of Lecturer computer science. These all ppsc lecturer computer science session are following our proposed and tentative PPSC Lecture computer Science Syllabus from analysis of GAT- Subject Computer Sciences Syllabus and PPSC Computer Science sylllabus for PMS Exams officially announced. In today Session No 13 for Lecturer Computer science.

#### we will basic DLD concepts, Number Systems and binary Arithmetic. Topics will be : –

1. What is number system?

2. What are negative numbers are represented in Computer?

3. What is 1’s complement?

4. What is 2’s complement ?

5. How to calculate Binary 1s and 2s complement?

5. What is hexadecimal number system?

6. How Hexadecimal to binary direct conversion and

7. How binary to hexadecimal direct conversion

9. How octal to binary direct conversion and

10. How binary to octal direct conversion

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#### Author: Habibullah Qamar

Its me Habib Ullah Qamar working as a Lecturer (Computer Sciences) in Pakistan. I have an MS(M.Phil) degree in computer sciences with specialization in software engineering from Virtual University of Pakistan Lahore. I have an experience of more than 15 years in the filed of Computer Science as a teacher. Blog Writing is my passion. I have many blogs, This one is special made with the aim of providing 100% Free online coaching and training to the students of under-graduate and postgraduate classes. Most of the students enrolled in computer sciences, information technology, software engineering and related disciplines find it difficult to understand core concepts of programming and office automation. They find difficult in understanding and solving their assignments.