CALENDAR.

The article presents the schedule of certain upcoming events related to computing machinery. The Institute of Electrical and Electronics Engineers International Convention will be held on March 22-25, 1965 in New York. The ACM Southern California Region 7th Annual Technical Symposium will be held on March 23,1965 in Anaheim, California. The H-800 Users Association Spring Meeting will be held on March 24-6,1965 in Washington, D.C. The Conference on Impact of Batch-Fabrication on Future Computers will be held on April 6-8, 1965 in Los Angeles, California. The National Telemetering Conference will be held on April 13-15, 1965 in New York. The 10th Annual Data Processing Conference will be held on April 20-21, 1965 in Birmingham, Alabama. The International Symposium on System Theory will be held on April 20-22, 1965, in Brooklyn, New York. The Numerical Control Society Second Annual Meeting will be held on April 20-23, 1965 in New York. The Symposium on Optimization Techniques will be held on April 20-23, 1965 in Pittsburgh, Pennsylvania.