These are all computer related terms which are more popular and widely accepted in thier transliterated form in Hindi and if any terms like चक्रिका etc. have been coined, these are not being used widely. No doubt, for computer, a term संगणक had been coined in Indian languages which are being used in some books but again one has to tell that संगणक means a कंप्यूटर (computer) as can be seen from the following example from wikipedia. Between the two, कम्प्यूटर or कंप्यूटर is more popular and widely used. No Hindi speaking person would ever say "मेरे पास संगणक है या मैं संगणक पर कार्य करता/करती हूँ".