The term 'EARLY COMPUTER' can be broken down into three crossword solutions: UNIVAC (6 letters), ABACUS (6 letters), and ENIAC (5 letters). UNIVAC stands for Universal Automatic Computer, which was the first commercial computer released in 1951. The ABACUS is an ancient calculating device that has been used since ancient times. ENIAC stands for Electronic Numerical Integrator and Computer, which was the first large-scale electronic computer developed in the 1940s.