Class notes
Class notes APCT110-111 /into to programming
- Course
- APCT110-111
- Institution
- University Of The District Of Columbia
Class notes based on my intro to python course. Basic principles and practices of programming.
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Chapter 1 : Main Topics hardware & software how:
, computers
computers can be
programmed Store data , how
programs
work ,
using python,
Program : A set of instructions that a comp bugginga debugging
follows to preform a task (core component Softmawhat : the computer does ; if the hardware
of software !) is the
body , the software is the "soul"
The programmer is the person that designs ,
* Application Soft programs for :
everyday tasks
creates , a tests computer email
programs ex .
,
games ,
web browsers
(software developer) * Soft programs that
System : control a manage
Hardware US Software : basic operations of computers
Hardware the physical of : the computer;think -
operating system(windows ,
Linux , Apple, etc):
the body not the "soul" , manager All of the other application programs
Major components : in a computer ; initially loaded into the
1
) CPU
.
=
central
processing unit : the part that computer by a boot
program
runs the programs (can't run software without it) -
Utility Program performs specific : tasks to
↳ microprocessors computer
are CPUs on chips (very tiny) enhance operation or
safeguard
2) Main stored here when data (ex Antivirus software disk clean up
memory :
programs are .
, ,
they're being run . This is Random Access
Memory file management ,
uninstallers ,
etc. )
(RAM) Gives CPU quick to data to Soft development tools create modify,
-
access run a :
,
program Temporary Storage (volatile) ! & test software programs
Erased when the computer is off ·
ex compilers , code editors , GUI
3) secondary storage devices : holds data for long designers ,
etc .)
periods of time , unlike RAM- programs stored How Computers Store Data
here for long term & transferred
in
memory
to
,
All data is stored in squences of Os And Is
be ran
bytes the basic unit of information in comp
types disk drive , solid state
memory , & flash storage & processing Consists of right binary .
memory digits (bits ; Os & 1s) that represents single
a
.
4
. input & output devices : Character-letter , number ,
or
symbol
Inputidata collected from other devices & people bi electrical component; key
: or positive charges
think loaded into /received by computer like on/off switch
an
Output produced by the computer for other people/ the pattern represents data stored in the byte
devices(text bit stream)
image Audio , , , or
think the computer giving
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