A computer uses the following interfacing protocol for the keyboard: when the end user types a character on the keyboard, the keyboard controller sets the LSB of its 8-bit status register (label keybd status) to 1 and updates the data register (label keybd data) with the ASCII code of the typed character. The device driver resets the status bit to 0 after reading the character. (a) (1 point) What type of IO transfer scheme is employed in this interfacing protocol

Communication is the exchange of information. true false

What is the worst-case complexity of the maxrepeats function? assume that the longest string in the names array is at most 25 characters wide (i.e., string comparison can be treated as o( class namecounter { private: int* counts; int nc; string* names; int nn; public: namecounter (int ncounts, int nnames); int maxrepeats() const; }; int namecounter: : maxrepeats () { int maxcount = 0; for (int i = 0; i < nc; ++i) { int count = 1; for (int j = i+1; j < nc; ++j) { if (names[i] == names[j]) ++count; } maxcount = max(count, maxcount); } return maxcount; }

Are special combinations of keys that tell a computer to perform a command. keypads multi-keys combinations shortcuts