Floating Point Representation

Signed numbers

An excellent online tutorial on Number Systems

http://courses.cs.vt.edu/%7Ecsonline/NumberSystems/Lessons/index.html

Sample Questions and Answers

1. Binary Numbers - Questions, Answers
2. Combinatorial and Sequentila Logic - Questions, Answers
3. ISA Level - Questions, Answers

   Sample Midterm

NASM, the Netwide Assembler (free)
Beginners Guide to NASM
GNU Assembler
Tom's Hardware Guide
Dos INT 21H codes

more links