This tutorial covers the basics of corrective coding. The purpose of the publication is to promote the successful development of corrective coding procedures and algorithms by students through the joint placement of adapted theoretical material and related specific tasks of a laboratory workshop performed on the basis of computers. The publication meets the requirements of the Federal State Educational Standard of Higher Professional Education in the field of undergraduate, graduate and specialty training "Electronics, Radio Engineering and Communication Systems." It may also be useful to those skilled in the art of corrective information coding.