Elliot Handler and continued to be produced in different versions until the early 1970s. Another product line was Hot Wheels, introduced in 1968, which gave rise to 10,000 different models. First called Mattel Creations, the company has become the largest toy maker in the world in terms of revenue. In April 2008, Mattel honored Handler with a 90th birthday party at its headquarters in El Segundo, California. Guests included his daughter Barbara Segal, the namesake of the Barbie doll. Handler died of heart failure at home in Century City, a district of Los Angeles, California, at age 95 on July 21, 2011.
Interrupt handler interrupts are often provided, which exacerbates stack usage. A primary constraint on the interrupt handler in this programming endeavour is to not exceed the available stack in the worst-case condition, requiring the programmer to reason globally about the stack space requirement of every implemented interrupt handler and application task. When allocated stack space is exceeded (a condition known as a stack overflow), this is not normally detected in hardware by chips of this class. If the stack is exceeded into another writable memory area, the handler will typically work as expected, but the application will fail later (sometimes much later)