Magnetic disks optical disks floppy disks magnetic tapes hard disks. It can store anywhere from 160 gigabytes to 2 terabytes. Rom ram random access memory the ability of a storage device to go directly to a specific storage location without having to search sequentially from a beginning location. Mass storage devices refer to the saving of huge data in a persistent manner.
Ppt secondary storage devices powerpoint presentation free to download id. Memory devices in a system the purpose of the memory device is to store the information and for the information retrieval. Computer memory is the storage space in computer where data is to be processed and instructions required for processing are stored. Secondary storage is nonvolatile retaining data when power is. The computer usually uses its inputoutput channels to access secondary storage and transfer the desired data to primary storage. Secondary storage also know as external memory or auxiliary storage not directly accessible by the cpu. With this, the computer can only accommodate a limited sized program and data. Also known as pen drive is the next revolution in secondary portable storage device. In this chapter, you will learn about the many types of secondary storage devices including their. The final two sections focus on recent system technologies such as storage networking and cloudbased storage. Ppt on input, output and memory devices by adrita kundu. In 1 971, ibm introd uced a technology called the floppy d isk, created by hossain raju at the beginning of the 1 980s the first optical d evices were released by sony and philips. The storage capacity of primary storage is not sufficient to store the large volume so secondary storage. Chapter 8 introduction storage secondary storage devices.
Categorizing storage devices magnetic storage devices optical storage devices powerpoint presentation. Ppt secondary storage devices powerpoint presentation free to. Secondary storage is for any amount of data, from a few megabytes to petabytes. Have a magnetic surface which allows the recording of the data. Describe common storage technologies such as optical, magnetic and solid state explain the need for secondary storage select suitable storage devices and storage media for a given application and justify their choice using characteristics such as capacity, speed, portability, durability and reliability originally designed for ocr. Secondary storage devices are storage devices that operate alongside the computers primary storage, ram, and cache memory. Magnetic sequential access memory is typically used for secondary storage in generalpurpose computers due to their higher density at lower cost compared to ram, as well as resistance to wear and nonvolatility. External devices that engage in io with computer systems can be grouped into three categories. Evolution of secondary storage devices the first hard d rive was used in 1 956 which is created by ibm and whose capacity was 5 m b. Data tape that stores large amounts of information that can only accessed sequentially. A device that only holds information is a recording medium. Solid state memory memory cards many of our digital devices cameras, mobile phones, mp3 players, etc.
To prevent hard disk crash must operate the pc within dustfree and cool room. A storage device is used in the computers to store. Secondary storage devices provide a way for the computer to store information on a permanent basis. What is storage devices storage devices of computer.
How to download slide share ppt in my phone storage quora. Marathi computer training without a teacher teach computer learn computer using software self study. Presentation on different types of storage devices free download as powerpoint presentation. Presentation on different types of storage devices solid. In this chapter, you will learn about the many types.
Muhammad tayyab bilal muhammad nouman yasir abbas tajamal hussain ali hamza imran khalid 3. Input output devices and secondary storage input output devices and secondary storage powerpoint ppt presentation. Storage devices download free powerpoint presentation slides. A free powerpoint ppt presentation displayed as a flash slide show on id. The memory is divided into large number of small parts. Main memory is a key component of a computer system that works in tandem with secondary storage. Cbse central board of secondary education chairman chandigarh chirag jain computer networks education educational loans iit india. Introduction a data storage device is a device for recording storing information data. This allows the system to run instructions, while secondary storage retains data. Secondary storage device holds the information until it is deleted or overwritten. Data storage has expanded from text and numeric files to include digital music files, photographic files, video files, and much more. All you need to do is just click on the download link and get it. If so, share your ppt presentation slides online with.
A storage device may hold information, process information, or both. The physical material that actually holds data is called a storage. Chapter 8 secondary storage 8introduction data storage has expanded from text and numeric files to include digital music files, photographic files, video files, and much more. Mass storage machines can store up to several trillion bytes of data and hence are used to store or save large databases, such as the information of customers of a big retail chain and library transactions of students in a college. Types of storage device is the property of its rightful owner. Enough content for 2 lessons in teacher ppt covers. Log in to slideshare find the right slideshare presentation click the download button click the link that says no thanks. A newer storage device is a usb flash drive which is about the size of your car key. Basics of computers secondary memory tutorialspoint. Types of storage devices lesson 9 powerpoint presentation. Ppt secondary storage devices powerpoint presentation. One of the oldest type of portable storage devices. The storage devices became a necessity,as the world started computerizing everything so came the need for storing information, because papers took a large space and are not permanent as they are physical the evolution started with the introduction of magnetic storage devices the surge came when tape recorder was invented in.
The storage capacity ranges from 128 mb to 16gb and rising. Starting with couple of mb storage capacity the main attraction was its solid state rugged construction and capable of being used on any computer equipped with usb port. Secondary memory secondary memory is the slowest and cheapest form of memory. To carry out big jobs like commercial data processing, it becomes essential that data be held in some expansive form of storage. Larger capacity but whose access time is slower than that of the main memory. Secondary storage devices hard disk floppy disk compact disk tape drives micro vault usb storage media 4. Computer memory is broadly divided into two groups and they are. This memory is external to the cpu the computer usually uses its inputoutput channels to access secondary storage and transfers the desired data.
Ppt types of storage device powerpoint presentation. In addition to these, auxiliary storage secondary storage devices are used to store data. Common secondary storage devices are the hard disk and optical disks. In this video, youll learn about optical storage formats, hard disk drives, solidstate drives, hybrid drives, hotswappable drives, flash memory drives, and tape drives.
Secondary storage also known as external memory or auxiliary storage, differs from primary storage in that it is not directly accessible by the cpu. Secondary memory devices include magnetic disks like hard drives and floppy disks. Alternatively referred to as external memory, secondary memory, and auxiliary storage, a secondary storage device is a nonvolatile device that holds data until it is deleted or overwritten. Let us look at some of the secondary memory devices available. The computer system essentially comprises three important parts input device, central processing unit cpu and the output device. Information in secondary storage may be in a variety of. Secondary memory is where programs and data are kept on a longterm basis. A fixed storage is an internal media device that is used by a computer system to store data, and usually these are referred to as the fixed disks drives or the hard.
Storage media in early computers earliest computers used paper for. Ppt on input, output and memory devices by adrita kundu authorstream presentation. They are primary storage device secondary storage device primary storage device. It plugs into almost any usb port in your computer and the data is erasable. This contains explanations on different kind of storage medium including magnetic storage device, flash storage device etc. Introduction the purpose of the storage unit of the computer is to store the data entered before processing and also to store the results after processing.
Storage devices secondary storage hard disk the hard disk drive is the main, and usually largest, data storage device in a computer. Powerpoint slide on storage devices compiled by roshan rawat. Can i have a look at your powerpoint presentation on storage devices please. Free for commercial use no attribution required high quality images. Depending on whether secondary memory device is part of cpu or not, there are two types of secondary memory fixed and removable. Uses of secondary storage include storing various forms of programs source, object, executable and temporary storage of virtual memory pages paging device or swap space. Sram static ram it is also a volatile storage devices. These devices store almost all types of programs and applications. Any information can be accessed in a few milliseconds because it is a direct access storage device. These new types of files require secondary storage devices with much greater capacity than floppy disks. Ccoommppuutter er ffununddaammenenttaallss pprradadeeeepp kk. Recording can be done using virtually any form of energy. Hard disk speed is the speed at which content can be read and written on a hard disk.
Categorizing storage devices storage devices hold data, even when the computer is turned off. This video will explain the different secondary storage devices available for your device for the gcse computer science course. Consequently, a hard drive or an additional, slower ssd may used as secondary storage to a primary, faster, pcie ssd. The other ones include the floppy disk drives, the cd rom, and the dvd rom. Continue to download save the slideshare presentation file in your browser by clicking to the left of the save fil. Secondary storage is about two orders of magnitude cheaper than primary storage. The secondary storage devices are usually as follows. Memory is an internal storage area in a computer, which is availed to store data and programs either permanently or temporarily. Storage devices those devices which are used to store data, information and programs permanently. The cpu itself is made of three components namely, the arithmetic logic unit alu, memory unit, and the control unit. Secondary storage also known as external memory or auxiliary storage not directly accessible by the cpu. It is necessary to initially copy the data present in secondary memory into the primary storage. It is the future of computer memory storage devices. The need for secondary storage memory and storage aqa.
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