1 [ERNST & YOUNG LLP LETTERHEAD] EXHIBIT 16.1 December 3, 1997 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Gentlemen: We have read Item 4 of Form 8-K dated December 3, 1997 of International Lottery & Totalizator Systems, Inc. and are in agreement with the statements contained in the second paragraph on Page 2 therein. We have no basis to agree or disagree with other statements of the registrant contained therein. Very truly yours, /s/ Ernst & Young LLP