11 Aug 2015Computer introduction1 Storage devices Bits, Bytes, Kilobytes, MB, GB, Terabytes Hardware Moore’s law Disks Internal hard disk 1 - 2 TB (50-100.

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Presentation transcript:

11 Aug 2015Computer introduction1 Storage devices Bits, Bytes, Kilobytes, MB, GB, Terabytes Hardware Moore’s law Disks Internal hard disk TB ( €) External hard disk TB ( €) Solid State Drive SSD up to 500 GB (up to 300 €)

11 Aug 2015Computer introduction2 Storage devices Discs CD 700 MB DVD 4 GB Blu-ray 25 GB Need a reader to be read Need a writer to be written Large and easy to scratch

11 Aug 2015Computer introduction3 Storage devices Memory USB pen drive or memory stick up to 128 GB (5-80 €) Used mostly to move data Memory cards Camera, phones

11 Aug 2015Computer introduction4 Software Software types Operating system Takes care of devices User-computer interface Windows OS X Linux Android iOS Windows Phone Program files (Word, Excel, Skype, …) Data files

11 Aug 2015Computer introduction5 Software licenses Cost Freeware (Skype; Linux) Shareware (mobile phone apps) Commercial (Windows; Office; Photoshop) Subscription (Office 365; Photoshop CC) Private Permission to modify Free or Open Source (Linux) Proprietary (Acrobat Reader; WinZip; Office)

11 Aug 2015Computer introduction6 Software naming Name Linux, Microsoft Office, Microsoft Windows Distribution/edition Linux Ubuntu Microsoft Office Professional Microsoft Windows Enterprise Version (usually numeric but may be a name) Linux Ubuntu Microsoft Office Professional 2013 Microsoft Windows 7 Enterprise

11 Aug 2015Computer introduction7 Data format Open GIF, PDF, HTML Closed proprietary DOC Open proprietary DOCX