stacktopregister
nounUK /ˈstæk.tɒpˌrɛdʒ.ɪ.stər/
US /ˈstæk.tɑːpˌrɛdʒ.ɪ.stɚ/
A stack top register is a small storage spot that holds the number at the very top of a stack.
The program read the stack top register to see which value was on top.
RELATED WORDS
OTHER MEANINGS
2. A hardware register that always shows the address of the top item in a stack.
The CPU updated the stack top register after each push.
3. A special slot in a computer that keeps the last value added to a list.
When the list grew, the stack top register changed to point at the new item.
4. A tiny memory cell used to track the highest element of a stack during calculations.
The calculator used a stack top register to remember the last number entered.