From Longman Dictionary of Contemporary Englishpersonal organizerˌpersonal ˈorganizer noun [countable] 
BTCNa small book with loose sheets of paper, or a very small computer, for recording information, addresses, meetings etc
BTCNa small book with loose sheets of paper, or a very small computer, for recording information, addresses, meetings etcExamples from the Corpus
personal organizer• When Keith gets back to his flat the personal organizer is sitting by the phone leering at him. 