Podcast
Questions and Answers
What is the term 'bit' short for?
What is the term 'bit' short for?
In the binary numbering system, what does a turned off bit represent?
In the binary numbering system, what does a turned off bit represent?
What does ASCII stand for in computer memory representation?
What does ASCII stand for in computer memory representation?
How are characters stored in a computer's memory?
How are characters stored in a computer's memory?
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What is the purpose of a program in the context of a computer?
What is the purpose of a program in the context of a computer?
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Why is the CPU often referred to as the 'computer's brain'?
Why is the CPU often referred to as the 'computer's brain'?
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What are the limitations of the ASCII character set?
What are the limitations of the ASCII character set?
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What distinguishes Unicode from ASCII in terms of character representation?
What distinguishes Unicode from ASCII in terms of character representation?
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What is the purpose of writing instructions in 0s and 1s for a CPU?
What is the purpose of writing instructions in 0s and 1s for a CPU?
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Why are machine language instructions always written in binary?
Why are machine language instructions always written in binary?
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Why was assembly language created as an alternative to machine language?
Why was assembly language created as an alternative to machine language?
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What is the significance of copying a program into main memory, or RAM, each time the CPU executes it?
What is the significance of copying a program into main memory, or RAM, each time the CPU executes it?
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Study Notes
- A computer's memory is divided into tiny storage locations called bytes, each byte is further divided into eight smaller storage locations called bits.
- A bit can represent one of two values depending on whether it's turned on or off, making it suitable for binary numbering system.
- Characters, including letters and punctuation marks, are stored in computer memory as binary numbers.
- Programs are usually stored on secondary storage devices like disk drives and are copied into main memory (RAM) each time they're executed by the CPU.
- CPU is the central processing unit of a computer that runs programs by performing simple operations on pieces of data. It doesn't understand instructions written in human languages; instead, it uses machine language written in binary code.
- Assembly language was created as an alternative to machine language, using short words called mnemonics instead of binary numbers for instructions.
- ASCII (American Standard Code for Information Interchange) is an important coding scheme for representing characters in computer memory, defining codes for 128 characters including English letters and various punctuation marks.
- Unicode is a more extensive encoding scheme that's compatible with ASCII and can represent characters of many world languages, surpassing ASCII's 128 character limit.
- A program is a list of instructions that tells the CPU to perform specific operations, with each instruction being a command for the CPU.
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Description
Explore the fundamental set of programs that control the internal operations of a computer's hardware, including topics such as storage, binary digits, and number representation.