BABBAGES ANALYTICAL ENGINEThis analytical engine, the first fully-automatic calculating machine, was constructed by Britishcomputing pioneer Charles Babbage (1791-1871, who first concei!ed the idea of an ad!ancedcalculating machine to calculate and print mathematical tables in 181"# Concei!ed by him in18$%, this machine was designed to e!aluate any mathematical formula and to ha!e e!en higherpowers of analysis than his original &ifference engine of the 18"'s# (nly part of the machine asa trial piece was completed before Babbage)s death in 1871#COMPACT DISK* compact dis+ (cd is a popular form of digital storage media used for computer files, pictures,and music# The plastic platter is read and written to by a laser in a C& dri!e# ,t comes in se!eral!arieties including C&--(., C&--, and C&--/#FLOPPY DISK,n 1971, ,B. introduced the first 0memory dis+0, as it was called then, or the 0floppy dis+0 as itis +nown today#The first floppy was an 8-inch fle1ible plastic dis+ coated with magnetic irono1ide2 computer data was written to and read from the dis+)s surface#The nic+name 0floppy0came from the dis+)s fle1ibility# The floppy dis+ was considered a re!olutionary de!ice in the03istory of Computers0 for its portability which pro!ided a new and easy physical means oftransporting data from computer to computer#KEYBOARD* computer +eyboard is one of the primary input de!ices used with a computer that loo+s similarto those found on electric typewriters, but with some additional +eys# 4eyboards allow you toinput letters, numbers, and other symbols into a computer that often function as commands# Thefollowingimageshowsa 5aite+ +eyboardwithindicatorspointingtoeachof thema6or+eysections of a +eyboard# 7arlier computer +eyboards had been based either on teletype machinesor +eypunches# COMPUTER MOUSE(riginally referred to as an 8-9:osition ,ndicatorfor a &isplay 5ystem, a mouse is ahardware inputde!ice thatwasin!ented by &ouglas 7ngelbart in19;$ while wor+ingat 8ero1:*-C# The mouse allows an indi!idual to control a pointer in a graphical user interface (ecommands, suchas thoseutili>edinate1t-basedcommandlineen!ironment li+e .5-&(5# LASER PRINTER?irst de!eloped at 8ero1 :*-C by es laser technology to print images on the paper# @aser printers are often used incorporate, school, and other en!ironments that reAuire print 6obs to be completed Auic+ly and inlarge Auantities# ,n the picture is a @e1mar+ C78"n laser printer and a good e1ample of a laserprinter# *s can be seen much larger than an in+ 6et printer found in most homes# ?inally, below isa chart of the steps a laser printer ta+es to print#USB *lternati!ely referred to as a =5B flash dri!e, data stic+, pen dri!e, memory unit, +ey chaindri!e and thumb dri!e, a 6ump dri!e is a portable storage de!ice# ,t is often the si>e of a humanthumb (hence the name and it connects to a computer !ia =5B port# Today, flash dri!es area!ailable in si>es such as "B;.B, B1".B, 1