Kyla
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CAPABILITIES AND LIMITATIONS OF COMPUTER Computer Capabilities • Speed
-The computer can process data transfer faster than any other machine. • Repetitiveness - The computer can tirelessly perform the same operations a million times.
• Accuracy -
The computer can produce data with speed and repetition with great corrections and precision.
• Logical operations -
The computer can make decisions based on alternative courses of action and depends on what a human prepared.
• Store and recall information -
The computer can store instructions, facts and information and doesn’t forget it just like human.
• Self- checking -
The computer checks its own work for accuracy by means of parity check.
COMPUTER LIMITATIONS Incapability to Generate Information The computer cannot generate information its own. It can process data and information by its own but it needs a programmer to prepare the instructions. Incapability to Correct Information Computers given wrong instructions will basically erroneous information. Any correction can be done by a programmer. Incapability to Make Original Decisions A computer can perform logical operations but limited based only to the prepared alternative paths by the programmer. Incapability to Develop Meaning from Objects A computer can’t respond to living objects. It doesn’t have feelings. Whatever the computers develops are only provided by the programmer.
SECONDARY STORAGE Secondary Storage -
-
is computer memory that is not directly accessible to the central processing unit of a computer, requiring the use of computer's input/output channels. Secondary storage is used to store data that is not in active use. is usually slower than primary storage, or internal memory, but also almost always has higher storage capacity and is non-volatile, which makes it perfect for the preservation of stored information in an event of power loss.
SECONDARY STORAGE DEVICES •
The Hard Disk Drive
-is the mechanism that controls the positioning, reading, and writing of the hard disk. The Hard Disk is the main secondary storage device used to permanently store information and consists of one or more magnetic disks contained in a box. An important function of a hard disk is to store Program Files and Data Files. Today's computers typically come with a hard disk that contains several billion bytes (gigabytes) of storage.
• Floppy Disk Drive (FDD) a removable storage device that reads and writes information magnetically onto floppy diskettes. The term "floppy" refers back to the 5.25" diskette that was actually soft and flexible. The 3.5" diskettes that we use today have a hard plastic exterior shell in order to protect the thin, flexible disk inside. A HDD is mounted inside the system unit and only removed for repairs or upgrades. The FDD provides removable storage, giving users the ability to take their files with them. The drawback to the floppy diskette is that it only holds 1.44 Mb of information, although very few PCs are without one. This is plenty of space for most text documents (Word and Excel files), but for files containing graphics, a floppy’s capacity may be insufficient. - is
• ZIP Disk Drive - is a secondary storage device for larger files that are too big for a floppy disk. ZIP drives can be either internal or external and the capacity of a single ZIP disk can be 100 Mb or 250 Mb. The ZIP disk shown here has a capacity of 100 Mb which is equivalent to 70 floppy diskettes. A CD-ROM Drive is a secondary storage device that reads information stored on a compact disc. While floppy and hard disks are magnetic media, the CD-ROM is an optic media. Magnetism can simply fade away in time; however, the life span of optic media is counted in tens of years, which makes CD-ROM a very useful tool for archiving data. A CD-ROM can hold 640Mb of data. CD-ROM drives can be housed inside the computer case (internal), or connected to the computer by a cable (exterior).
The most important specification for a CD-ROM drive is its speed, how fast the disc will spin. The faster the disc spins, the faster the data can be transferred to the computer’s memory. The CD-ROM’s speed is indicated by a number with an "x" after it. For example, a twenty-four speed CD-ROM is labelled as a 24x. The larger the number, the faster the disc can
spin. Most new computer systems today come with a 20x CD-ROM drive, and more and more have a DVD option.
•
MAGNETIC STORAGE MEDIA Included in this catagory are Diskettes, Hard Disks and Magnetic Tapes. Diskettes range from a common Personal computers floppy disk (1.44MB of storage) to larger capacity disks such as those used with ZIP Drives (100MB of storage). Hard disks store data much the same way as diskettes, however, have much more capacity (3GB and up of storage). Finally there are Magnetic Tapes. These come in various types. Some look like an ordinary audio tape you would use for recording music while others come on reels like film from an old movie projector. -
•
OPTICAL STORAGE MEDIA - In this catagory is the CD-ROM. The cd-rom is a little different from the other types of storage media we have talked about so far. The difference is that data can only be read and not written on cd-roms hence the name CD-ROM (Read Only Memory). The cd-rom seems to have replaced other forms of media, such as the diskette in areas such as software distrobution. This is due the cd-roms gargantuan storage capacity- up to 660MB or over 400 3 1/2" diskettes
SUBMITTED BY:
• • • • • • • • •
FAT- 13 GROUP 1 AGUILAR, ALEXIS F. COMPLETO, ANTHONY M. DAQUIZ , CHRISTOPHER SINGUA, AARON JAMES ADVINCULA, MIA BELAÑOS, RUBY JANE FRAYNA, ROSELDA SALUD, ARLENE TORNO, JONALYN
SUBMITTED TO: MR. MICHAEL P. SACCO
TEACHER
-The computer can process data transfer faster than any other machine. • Repetitiveness - The computer can tirelessly perform the same operations a million times.
• Accuracy -
The computer can produce data with speed and repetition with great corrections and precision.
• Logical operations -
The computer can make decisions based on alternative courses of action and depends on what a human prepared.
• Store and recall information -
The computer can store instructions, facts and information and doesn’t forget it just like human.
• Self- checking -
The computer checks its own work for accuracy by means of parity check.
COMPUTER LIMITATIONS Incapability to Generate Information The computer cannot generate information its own. It can process data and information by its own but it needs a programmer to prepare the instructions. Incapability to Correct Information Computers given wrong instructions will basically erroneous information. Any correction can be done by a programmer. Incapability to Make Original Decisions A computer can perform logical operations but limited based only to the prepared alternative paths by the programmer. Incapability to Develop Meaning from Objects A computer can’t respond to living objects. It doesn’t have feelings. Whatever the computers develops are only provided by the programmer.
SECONDARY STORAGE Secondary Storage -
-
is computer memory that is not directly accessible to the central processing unit of a computer, requiring the use of computer's input/output channels. Secondary storage is used to store data that is not in active use. is usually slower than primary storage, or internal memory, but also almost always has higher storage capacity and is non-volatile, which makes it perfect for the preservation of stored information in an event of power loss.
SECONDARY STORAGE DEVICES •
The Hard Disk Drive
-is the mechanism that controls the positioning, reading, and writing of the hard disk. The Hard Disk is the main secondary storage device used to permanently store information and consists of one or more magnetic disks contained in a box. An important function of a hard disk is to store Program Files and Data Files. Today's computers typically come with a hard disk that contains several billion bytes (gigabytes) of storage.
• Floppy Disk Drive (FDD) a removable storage device that reads and writes information magnetically onto floppy diskettes. The term "floppy" refers back to the 5.25" diskette that was actually soft and flexible. The 3.5" diskettes that we use today have a hard plastic exterior shell in order to protect the thin, flexible disk inside. A HDD is mounted inside the system unit and only removed for repairs or upgrades. The FDD provides removable storage, giving users the ability to take their files with them. The drawback to the floppy diskette is that it only holds 1.44 Mb of information, although very few PCs are without one. This is plenty of space for most text documents (Word and Excel files), but for files containing graphics, a floppy’s capacity may be insufficient. - is
• ZIP Disk Drive - is a secondary storage device for larger files that are too big for a floppy disk. ZIP drives can be either internal or external and the capacity of a single ZIP disk can be 100 Mb or 250 Mb. The ZIP disk shown here has a capacity of 100 Mb which is equivalent to 70 floppy diskettes. A CD-ROM Drive is a secondary storage device that reads information stored on a compact disc. While floppy and hard disks are magnetic media, the CD-ROM is an optic media. Magnetism can simply fade away in time; however, the life span of optic media is counted in tens of years, which makes CD-ROM a very useful tool for archiving data. A CD-ROM can hold 640Mb of data. CD-ROM drives can be housed inside the computer case (internal), or connected to the computer by a cable (exterior).
The most important specification for a CD-ROM drive is its speed, how fast the disc will spin. The faster the disc spins, the faster the data can be transferred to the computer’s memory. The CD-ROM’s speed is indicated by a number with an "x" after it. For example, a twenty-four speed CD-ROM is labelled as a 24x. The larger the number, the faster the disc can
spin. Most new computer systems today come with a 20x CD-ROM drive, and more and more have a DVD option.
•
MAGNETIC STORAGE MEDIA Included in this catagory are Diskettes, Hard Disks and Magnetic Tapes. Diskettes range from a common Personal computers floppy disk (1.44MB of storage) to larger capacity disks such as those used with ZIP Drives (100MB of storage). Hard disks store data much the same way as diskettes, however, have much more capacity (3GB and up of storage). Finally there are Magnetic Tapes. These come in various types. Some look like an ordinary audio tape you would use for recording music while others come on reels like film from an old movie projector. -
•
OPTICAL STORAGE MEDIA - In this catagory is the CD-ROM. The cd-rom is a little different from the other types of storage media we have talked about so far. The difference is that data can only be read and not written on cd-roms hence the name CD-ROM (Read Only Memory). The cd-rom seems to have replaced other forms of media, such as the diskette in areas such as software distrobution. This is due the cd-roms gargantuan storage capacity- up to 660MB or over 400 3 1/2" diskettes
SUBMITTED BY:
• • • • • • • • •
FAT- 13 GROUP 1 AGUILAR, ALEXIS F. COMPLETO, ANTHONY M. DAQUIZ , CHRISTOPHER SINGUA, AARON JAMES ADVINCULA, MIA BELAÑOS, RUBY JANE FRAYNA, ROSELDA SALUD, ARLENE TORNO, JONALYN
SUBMITTED TO: MR. MICHAEL P. SACCO
TEACHER
