Term
Hardware definition and three examples |
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Definition
the physical machine. keboard mouse display screen CPU (central processing unit) memory (bytes, folders) |
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Term
Software definition and three examples |
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Definition
programs used to give instructions to the computer to carry out microsoft word java jGRASP |
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Term
| CPU (Central Processing Unit) |
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Definition
device inside your comp that allows your comp to follow a program's instructions. (intel, core 2 duo processor) on carries out simple instructions such as moving numbers/data from one place in memory to another. desirgn of the hardware is simple, complexity comes from software. |
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Term
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Definition
holds current program and much of data that program is manipulating it's volatile, meaning it disappears when you shut down your comp.
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Term
auxillary memory aka secondary memory |
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Definition
exists even when comp is off. includes disks: hard disk drives, flash drives, CD's, DVD's |
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Term
RAM (random access memory) is an example of... |
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Definition
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Term
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Definition
- the smallest addressable unit of memory (address is the number of the byte)
- by convention it holds 8 digits, each of which is 0 or 1, each digit is called a binary digit, or bit
- so, byte=8 bits
- one byte is just large enough to hold a single keyboard character
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Term
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Definition
when the computer needs to store a piece of data that cannot fit into a single byte, it uses several adjacent bytes. these adjacent bytes are considered to be a single, larger memory location, in which the address is the address of the first byte
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Term
operating system is an example of.. |
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Definition
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Term
assembly language/ high-level language |
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Definition
ex-Java languages designed to be relatively easy for people to use hardware doesn't understand it, so it has to be translated from assemble language (what programmer understands) into machine language (what computer understands) |
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Term
low-level language/ machine language |
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Definition
what the computer understands translated using a compiler
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Term
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Definition
changes high level language into low level language input - source program/source code output - object program/object code
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Term
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Definition
like a compiler but better. compilers run once, interpreters run every time the program is executed makes compilers better bc program then runs faster |
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Term
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Definition
what java uses - combo of compiler and interpreter it is the language of a hypothetical computer (virtual machine) that is very similar, but not exactly like, any computer JVM - java virtual machine, translates bytecode into code a computer can actually read. really easy. makes Java versatile for any computer, and it can always use the same compiler. |
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Term
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Definition
worked at sun microsystems 1991 - created language intended for programming home appliances that would work for variety of stuff, TVs, toasters, etc (where idea for bytecode came from) 1994 - realized language would be perfect for developing a web browser (called WebRunner, then HotJava, then Netscape endorsed the program) |
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Term
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Definition
Application - regular program meant to run on your computer
Applet - little application meant to be sent to another location on the Internet and run there |
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Term
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Definition
| a library of classes that have already been defined for you, such as java.util |
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Term
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Definition
every java program has a method called main, and often other methods. the definition of method main extends from another open brace to another close brace.
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Term
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Definition
instructions define a task and make up the body of the method |
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Term
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Definition
used to perform actions the actions are defined by methods system.out is an object print.ln is a method (inside the parentheses) is called an argument |
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Term
method call/ method invocation |
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Definition
an object performs an action when you invoke/call one of it's methods |
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