Sites like Spishu.ru and similar "GDZ" (готовые домашние задания) portals host digital keys for workbooks. To find the correct one, search for the author's name alongside the workbook title:
Basic coding and introductory logic.
ГДЗ информатика 7 класс Босова рабочая тетрадь (for Bosova ). informatika 7 klass rabochaia tetrad otvety onlain spishu.ru
Hardware components and universal data processing. Sites like Spishu