1. Scanners, flash drives, digital cameras

2. Scanners Types: handheld, flatbed, film/slide, drum(industrial) Components: Charge-coupled device (CCD) array, mirrors, scan head, glass plate, lamp, lens, cover, filters, stepper motor, stabilizer bar, belt, power supply, interface port(s), control circuitryCCD) array How it worksHow it works: lamp lights document, scan head moves across the document, mirrors reflect the image onto a lens, and the lens focuses the image through a filter on the CCD array. The marketplace

3. Quality measurement: CCD vs. CIS (Contact Image Sensor) Resolution: hardware sampling (1,200-4,800 dpi), and software (interpolation): 9,600- unlimited. Resolution Sharpness : depends on the quality of the lens and the brightness of the lamp. Depth: 36-bit, up to 48-bit color, but output is 24-bit InterfacesInterfaces: USB, SCSI, FireWire, parallel Software: Twain and WIA (conflicts in XP) TwainWIAconflicts in XP Scanner FAQScanners Use XnView to editXnView

4. Flash RAM and drives Flash RAM basics a solid state storage: a type of SRAM, EEPROM chip nonvolatile and does not require constant power to retain information, unlike DRAM. How it works: cells values are defined by rows and columns grid using tunneling.using tunneling Devices that use flash RAM BIOS chip memory cards: PDAs, cameras, MP3 players, etcmemory cards smart cards: future of smart cards? smart cardsfuture of smart cards? flash USB drives: why not replace hard-drives?

5. Flash USB drives Flash USB drive basics NAND flash memory (cells arranged serially) integrated with a USB interface, up to 8 GB of storage integrated with a USB interface components: USB connector, USB mass storage controller (CPU and memory), flash memory chip, crystal oscillator (clock), LED More The USB Flash drive alliance Making the USB flash drive bootable Portable applications for USB flash drives

6. Digital cameras Digital camera basics based on CCD (we saw it in scanners): sample the original light that bounces off the subject, converting light patterns into pixel valueslight patterns into pixel values resolution: the number of unique cells in the CCD, measured in megapixels resolution capturing color: color filter array over each photosite capturing color exposure, focus and zoom storage media: flash RAM and file sizes storage media interfaces: USB or FireWire, also storage media readers (floppy, USB)USB Image management: XP, XnViewXP

7. Digital camcorders The basics analog camcorders: CCD, lens and motors to handle zoom, focus and aperture, VCR shrunk down to fit in it. analog camcorders digital camcorders: captures a frame of video from the CCD and (using an analog-to-digital converter) records the signals as bytes in a tape, DVD or hard-drive. digital camcorders digital formats: MiniDV, Digital8, DVD, memory cards digital formats The marketplace digital camcorders: 2002, 2004, 2005200220042005 digital cameras: big cameras for beginnersbig cameras for beginners