Business Studies JSS1 Third Term Leave a Comment / By Adejoke Mokolade / March 24, 2015 You need to be logged in to access this lesson. Lessons Alphanumeric KeysBasic ServicesCare for the ComputerCorrect Keyboarding TechniqueCorrect Spacing and Punctuation MarksDouble Entry Book-KeepingHome Row KeysIntroduction to KeyboardingJournalsParts of Computer KeyboardRevision and ExaminationSource Documents