1. Write a BCPL program that accepts strings from the user and builds them into a binary tree. Whenever the user types * as the input string, your program should print out the entire contents of the tree in alphabetical order, then delete the entire tree, starting again with an empty one.
2. Write your own newvec() and freevec() and demonstrate that they work by using them in your solution to part 1. They don't need to be the most sophisticated newvec and freevec imaginable, but they should at least recombine neighbouring free chunks into one.

The instruction ishl (shift left integer) exists in jvm but not in ijvm. it uses the top two values on the stack, replacing the two with a single value, the result. the sec- ond-from-top word of the stack is the operand to be shifted. its content is shifted left by a value between 0 and 31, inclusive, depending on the value of the 5 least signifi- cant bits of the top word on the stack (the other 27 bits of the top word are ignored). zeros are shifted in from the right for as many bits as the shift count. the opcode for ishl is 120 (0x78).a. what is the arithmetic operation equivalent to shifting left with a count of 2? b. extend the microcode to include this instruction as a part of ijv.

What is the digital revolution and how did it change society? what are the benefits of digital media?

How is the brightness of oled of the diaplay is controled