Question: What is the least clock speed (MHz) with January 1986 as introduced?
SQL: SELECT MIN("Clock speed (MHz)") FROM "2-18640-1" WHERE "Introduced" = 'January 1986';

Question: With April 1986 as the introduced, what is the least clock speed (MHz)?
SQL: SELECT MIN("Clock speed (MHz)") FROM "2-18640-1" WHERE "Introduced" = 'April 1986';

Question: The PowerBook 100 model has what processor?
SQL: SELECT "Processor" FROM "2-18640-1" WHERE "Model" = 'PowerBook 100';

Question: When was the Lisa 2 model discontinued?
SQL: SELECT "Discontinued" FROM "2-18640-1" WHERE "Model" = 'Lisa 2';