1983 followed by 1984
1983 (MCMLXXXIII) was a common year starting on Saturday of the Gregorian calendar, the 1983rd year of the Common Era (CE) and Anno Domini (AD) designations, the 983rd  year of the 2nd millennium, the 83rd  year of the 20th century, and the  4th   year of the 1980s decade.  
The year 1983 saw both the official beginning of the Internet and the first mobile cellular telephone call.