1.2.4 Types Of Programming Language

Question 1

Programming paradigm

Answer 1

A philosophy, style or general approach to writing code

Question 2

Imperative languages

Answer 2

A series of instructions that tell the computer exactly how to deal with a program and deal with a problem

Question 3

3 types of imperative language

Answer 3

Structured, procedural and object-oriented

Question 4

Structured

Answer 4

A series of procedures or functions that can be reused split a large program into manageable chunks

Question 5

Declarative language

Answer 5

The user inputs the desired result but not how to get there and the computer does the work
Sets rules and answers questions

Question 6

Logic programming

Answer 6

Expresses the logic of a computation without expressing its control flow
Defines a set of facts and rules based on the problem

Question 7

Declarative language used

Answer 7

Medical diagnosis, oil exploration, processing natural language

Question 8

Assembly language facts

Answer 8

Different for every type of processor
Assembler translates to machine code for execution
Each has it’s own instruction set called an instruction set architecture

Question 9

What are the last 2 bits of the opcode?

Answer 9

The addressing mode, clarifies what the operand means

Question 10

Little man computer

Answer 10

Only has 11 instructions

The imaginary computer it runs on has only 100 memory locations (7 bits)

Question 11

LMC ADD x

Answer 11

Adds the contents of the memory address x to the value in the accumulator

Question 12

LMC SUB x

Answer 12

Subtracts the contents of the memory address x from the value in the accumulator

Question 13

LMC STA x

Answer 13

Stores the value in the accumulator in the memory address x

Question 14

LMC LDA x

Answer 14

Loads the value in the memory address x to the accumulator

Question 15

LMC HLT

Answer 15

Stops the program

Question 16

LMC INP

Answer 16

Allows the user to input a value to the accumulator

Question 17

LMC OUT

Answer 17

Outputs the value in the accumulator to the screen

Question 18

LMC BRZ x

Answer 18

Branch if the contents of the accumulator equal 0

Question 19

LMC BRP x

Answer 19

Branch if the contents of the accumulator are greater than or equal to 0

Question 20

LMC BRA x

Answer 20

Branch always

Question 21

LMC how do branches work?

Answer 21

You make a branch name after the BRA/BRP/BRZ and call it before a line to show where you skip to

Question 22

LMC x DAT

Answer 22

Creates a variable using variablename DAT

Question 23

Immediate addressing

Answer 23

The operand holds an actual value

Question 24

Direct addressing

Answer 24

The operand holds the address of the value

Question 25

Indirect addressing

Answer 25

The location holding the address of the value

Question 26

Indexed addressing

Answer 26

The address of the operand is obtained by adding the value to a base address which is stored in the input register. Used for accessing an array whose elements are in successive memory locations

Question 27

Reading from file pseudocode

Answer 27

myFile = openRead(“filename.txt”)
line = myFile.readLine()
myFile.close()

Question 28

Determining end of file

Answer 28

myFile.endOfFile()

Question 29

Writing to a file

Answer 29

myFile = openWrite(“filename.txt”)
myFile.writeLine(“text to write”)
myFile.close()