Khan Academy - Computers Flashcards

Questions and Answers

What is the logic gate that corresponds to the truth table provided?

OR Gate

Which of these lists correctly sorts components from high-level to low-level?

integrated circuit, transistor, logic gate, computer

transistor, logic gate, integrated circuit, computer

computer, integrated circuit, logic gate, transistor (correct)

logic gate, computer, transistor, integrated circuit

Sort the files from largest size to smallest size:

"familytree.ged" (32 KB), "notes.txt" (450 B), "grandma_bw.jpg" (900 KB), "grandfather.jpg" (2 MB), "interview.mov" (1.2 GB), "reunion.mov" (15 GB)

"grandfather.jpg" (2 MB), "grandma_bw.jpg" (900 KB), "familytree.ged" (32 KB), "notes.txt" (450 B), "interview.mov" (1.2 GB), "reunion.mov" (15 GB)

"reunion.mov" (15 GB), "interview.mov" (1.2 GB), "grandfather.jpg" (2 MB), "grandma_bw.jpg" (900 KB), "familytree.ged" (32 KB), "notes.txt" (450 B) (correct)

"interview.mov" (1.2 GB), "grandfather.jpg" (2 MB), "grandma_bw.jpg" (900 KB), "familytree.ged" (32 KB), "notes.txt" (450 B), "reunion.mov" (15 GB)

What is a possible state of the inputs A/B/C/D if the final output is 000?

A = 0, B = 1, C = 0, D = 0 Signup and view all the answers

What is the minimum number of bits that can represent 2 options?

2 Signup and view all the answers

Match the following terms with their corresponding binary values:

on = 1 off = 0 low = 0 high = 1 false = 0 true = 1 Signup and view all the answers

How does a computer store numbers in memory?

Using the binary number system. Signup and view all the answers

What are the possible states of inputs A and B if the output is 111 and input C is 111?

Input A is 1, input B is 0 Signup and view all the answers

How many bits of information can 3 wires represent?

3 Signup and view all the answers

Complete the truth table for an OR gate: Input A Input B Output: 1 1 , 1 0 , 0 1 , 0 0

1, 1, 1, 0 Signup and view all the answers

What is the best description of a logic gate?

It outputs 0 or 1 based on input values and a Boolean function. Signup and view all the answers

What should Marquis do to convert a GIF photo to JPEG?

Open the file in an image editing application, export it as a JPEG, and upload the exported JPEG file. Signup and view all the answers

What is a possible state of the inputs A/B/C/D if the final output is 000?

A = 0, B = 0, C = 0, D = 0 Signup and view all the answers

Why is the CPU important in a computer?

Without a CPU, the computer can't process the data that comes from the keyboard. Signup and view all the answers

Complete the truth table for an OR gate: Input A Input B Output: 0 0 , 0 1 , 1 0 , 1 1

0, 1, 1, 1 Signup and view all the answers

Which displays could be represented by a single bit?

Both A and B Signup and view all the answers

What values can a binary digit represent?

0 or 1 Signup and view all the answers

Study Notes

Logic Gates and Truth Tables

Truth tables display output values of logic gates based on input combinations.
An OR gate outputs 1 if at least one input is 1; its truth table includes rows: 00 → 0, 01 → 1, 10 → 1, 11 → 1.
AND gate requires all inputs to be 1 for a 1 output; input combinations are essential in determining outputs in circuits.

Computer Components Hierarchy

Components of a computer are structured from high-level to low-level: computer, integrated circuit, logic gate, transistor.
Each level serves a different computational function, from simple to complex operations.

File Sizes in Computing

Understanding file sizes helps organize data; sizes are typically listed from largest to smallest.
Examples include files such as "reunion.mov" (15 GB) and "notes.txt" (450 B).

Circuit Inputs and Outputs

Inputs in circuits directly affect outputs; for example, for an AND gate leading to an OR gate, if the output is 111 and input C is 111, combinations of inputs A and B include 00, 01, 10, and 11.

Binary Representation

Computers utilize binary number system for number representation in memory.
One wire can represent two states (on/off), therefore, three wires represent three bits of information (2^3 = 8 combinations).
Minimum bits required to represent two options are 2 (as 2^2 = 4).

Logic Gate Functionality

A logic gate outputs either 0 or 1 based on specific Boolean functions, linking inputs to outputs critically in circuit design.

File Format Conversions

Changing image file formats (e.g., GIF to JPEG) requires editing software to export the required file type before uploading.

Digital Alarm Clock Indicators

Digital clocks can represent specific indicators with a single bit, such as temperature unit (C/F) and AM/PM status.

Binary Digit Values

A binary digit (bit) can only represent two values: 0 or 1, foundational to digital computing and data representation.

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Description

Test your knowledge on the fundamentals of computer logic and components with these flashcards. Explore essential concepts like truth tables and the structure of computer systems. Ideal for students seeking a solid grasp of computer science basics.

Khan Academy - Computers Flashcards

Questions and Answers

What is the logic gate that corresponds to the truth table provided?

Which of these lists correctly sorts components from high-level to low-level?

Sort the files from largest size to smallest size:

What is a possible state of the inputs A/B/C/D if the final output is 000?

What is the minimum number of bits that can represent 2 options?

Match the following terms with their corresponding binary values:

How does a computer store numbers in memory?

What are the possible states of inputs A and B if the output is 111 and input C is 111?

How many bits of information can 3 wires represent?

Complete the truth table for an OR gate: Input A Input B Output: 1 1 , 1 0 , 0 1 , 0 0

What is the best description of a logic gate?

What should Marquis do to convert a GIF photo to JPEG?