Ruth Handler of plastics, Lucite and Plexiglas. Ruth Handler suggested that he start doing this commercially and they began a furniture business. Ruth Handler worked as the sales force for the new business, landing contracts with Douglas Aircraft Company and others. Her husband Elliot Handler and his business partner Harold "Matt" Matson formed a small company to manufacture picture frames, calling it "Mattel" by combining part of their names ("Matt" and "Elliot"). Later, they began using scraps from the manufacturing process to make dollhouse furniture. The furniture was more profitable than the picture frames and it was decided to concentrate on toy
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)