CTE 121 covers 12 topics. StudyPath paces them into daily study
sessions that finish before your exam date, with practice questions and worked
answers for each one.
Advantages of octal and hexadecimal representation
Binary-coded decimal (BCD)
Excess-3 code
Gray code
ASCII code
Seven-segment display code
Unicode
A sample from this course
One topic, as StudyPath teaches it.
Number systems and digits
Number systems and digits cover the representation of numbers in various bases (binary, octal, decimal, hexadecimal) and the rules governing digit values and place values. Mastery of conversion techniques and understanding of positional notation is essential for solving exam questions on data representation in digital computers.
What you get for CTE 121
Every topic above, split into sessions and dated against your exam.
Practice questions per session, with answers that explain themselves.
Offline reading — the whole course is a few hundred KB on your phone.
An AI tutor that answers questions using this course's own material.