From Essential to Trial: Digital Circuit is intended for a first course in logic design, taken by computer science, computer engineering, and electrical engineering students(basically in first year of courses). The text integrates laboratory experiences with basic fundamentals details added whenever it required when experiments are going to perform. This is the only book of its kind that includes both hands-on labs and details of digital electronics. Its also useful as reference material for industry people who want just go through knowledge of digital electronics.