EECS review test 1

what tracks the progress of a program in execution

memory mgt

this is a very small amount of very fast memory that is built into the CPU (central processing unit) in order to speed up its operations by providing quick access to commonly used values.

A register

this may hold an instruction, a storage address, or any kind of data (such as a bit sequence or individual characters)

A register

a unit in a computer (part of the CPU) that carries out arithmetic and logical operations.

ALU

what do we call the exchange of register information that occurs when one process is removed from the CPU and another takes its place

context switch

in GIMP, shift+C is the shortcut to the BLAK the image

crop

1387 could be a number

dec/hex

representing text: A= 65 B=66 a=97 b=98

decimal character

#17 test 2 what's the result of EXCEL formula =LEFT(RIGHT("hello", 4),3) produce

ell h e l l o 0 1 2 3 4 take only 2-5 (ello) e l l o 1 2 3 4 take first 3 ans: e l l 1 2 3

BLANK involves replacing common words with single characters that would not normally be in text

encoding ? #17

True or False? The digits used in base 8 are 1 through 8

false

representing text: A= 41 B=42 a=61 b=62

hexadecimal character

1387 could be a ? number

hexadecimal or decimal?

the integrated circuit (IC) was developed

jack kilby, texas instruments

w whom did the idea of using holes in paper to communicate algorithms to machines originate

jacquard?

this involves replacing common works w single characters not normally be in text

keyword

which type of touch screen could you NOT use wearing a runner glove

capacitative touch screen

this may consist of: a single cell a row or set of rows a column of set of columns a rectangular grid

cell range

-146 in 10bits two's complement representation

check test 1 number13

What is the decimal value of the following binary value in two's complement: 11010111?

-41

range of the 4-bits 2's complement is

-8 to +7

• A coordinated network of zombie computers is called a

"botnet" DDOS:

Malicious hackers use trojansto take control of network devices; compromised computers are called

"zombies" DDOS:

18 test 1 If # character is the flag character in run length encoding, how would the following string be compressed XXXXXYYYYABBCCCCCC

#X5#Y4ABB#C6

- symbols - KEYWORD ENCODING o as o the o and o that o must o well o those

- symbols o as ^ o the ~ o and + o that$ o must& o well% o those#

The following binary value represents a real number: 10011100. Using the same 8-bit floating-point representation that was presented in lecture, determine its decimal value.

-1.2

the first portable personal computer was the

osborne I

suppose you took a photo of a tall condo tower from ground level. you pointed your camera up and now th building looks like its falling over backwards. what image editing tool would you use to fix it

perspective tool

this is one of a small set of data holding places that are part of the computer processor.

processor register (CPU register)

this is a small memory location in the CPU

register

In floating point notation, the bit pattern is divided into 3 components: e.g. 0 1 1 0 1 0 0 1 sign (original value): exponent: mantissa:

sign (original value): 0 = positive 1 = negative exponent: 0xx = positive (move radix right) 1xx = negative (move radix left) xx = number of places moved mantissa: Interpret as ".1001"

True or False? Two hexadecimal digits can be stored in one byte.

t

The following binary value represents a real number: 01110101. Using the same 8-bit floating-point representation that was presented in lecture, determine its decimal value.

0.005

Represent the decimal number 37 as an 8-bit two's compliment binary number.

00100101

Represent the decimal number 57 as an unsigned binary number.

00111001

in a 12-bit two's complement number system -2048 has the following representation

100000000000

decimal natural number 175 expressed in standard binary is

10101111

what's the 10-bit 2's complement representation of -146

1101101110 #13 test 1

Represent the decimal number -23 as an 8-bit two's compliment binary number.

11101001

decimal equivalent of the unsigned binary (natural) number 10010110 is

150

base digits 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F

16

which of the following is the hexadecimal equivalent of the unsigned binary number 111000111

1c7

base digits 0,1

2

an audio signal digitized by sampling its value at regular intervals. a sampling rate of around BLANK times per second is needed to create a reasonable sound reproduction

4000

given the ASCII code for B is 66, expressed as a decimal value, what's the ASCII code in hexadecimal for the letter H

48

base digits 0,1,2,3,4

5

how many bits would be needed to represent a character set containing 45 characters

6

largest digit in the octal number

7

Convert the following binary number to hexadecimal: 11011011

: DB

#19-25 on test 1 write the formula that will convert the values in degress in column A into radians into column B

=RADIANS(degrees)

both inputs are 1, output 0, otherwise its all 1

Nand

what's the name of the register that contains the address of the next instruction to be executed

PROGRAM COUNTER

Suppose the following bit pattern stores a floating point value, based on the organization convention just presented(1-bit sign, 3-bit exponent, 4-bit mantissa). What is the value? e.g. 0 1 1 0 1 0 0 1

Putting it all together: • (positive) .9 • Move the radix point (decimal point) 2 places left .009

number of picture elements used to represent a picture is called the

RESOLUTION

BLANK works best when used for video that changes little from frame to frame, such as a scene that contains little movement

TEMPORAL compression

It tells the computer's memory, arithmetic/logic unit and input and output devices on how to respond to a program's instructions.

The control unit (CU)

this is a component of a computer's central processing unit (CPU) that directs the operation of the processor.

The control unit (CU)

which excel function uses the left column of a table as its lookup vector

VLOOKUP

in which state does a process reside if it does not have a needed resource

WAITING state

If # character is the flag character in run length encoding, how would the following compressed version be a uncompressed string #X5#Y4ABB#C6

XXXXXYYYYABBCCCCCC

#18 test 2 what's the result of evaluating the excel expression =IF(OR(AND(A1,B1),A1),"Y","N")

Y WHEN A1 IS 1 AND B1 IS 0...

which of the following is not a valid colour model CMYK HSL RGB VBR YUV

ans VBR

base digits 0,1,2,3,4,5,6,7,8,9

base digits10

base digits 0,1,2,3,4,5,6,7

base digits8

A single binary digit is called a(n)

bit

this connects all the internal components of a computer, such as CPU and memory, to the motherboard.

bus