making backup and recovery difficult, difficult data synchronization, system consistency makes it difficult to change versions of a program, and user training is greater. PROBLEMS: 17. a. ALU CPU component – b. CD-ROM - secondary storage c. keyboard input equipment – d. Modem data communications – e. dot-matrix printer output equipment – f. POS device - input equipment g. MICR reader - input equipment h. laser printer - output equipment i. flash memory secondary storage – j. OCR reader - input equipment k. magnetic (hard) disk secondary storage – l. ATM - data communications m. Primary memory - CPU component 18. a. POS Point of sale devices, gather and record electronic data – b. CPU Central processing unit, processes tasks within a computer – c. OCR Optical character recognition, optical readers to interpret data – d. MICR Magnetic ink character recognition, magnetically-encoded paper coding – e. ATM Automated teller machine, to communicate to banking customers – f. RAM Random access memory, primary memory, operating instructions – g. ALU- Arithmetic-logic unit, performs arithmetic and logic tasks h. MIPS Millions of instructions per second, computer processing speeds – i. OS Operating system, helps computer run itself and programs within – j. MHz Megahertz, computer processing speeds – k. pixel Picture elements, dots of color in video output – l. CD-ROM Compact disk-read only memory, secondary storage – m. worm Write-once, read-many, type of cd-rom – n. modem modulator-demodulator, transmission over phone lines – o. LAN Local area network, small area connected devices – p. WAN Wide are network, large area connected devices – q. RFID Radio frequency Identification, enables identification using radio waves – r. WAP Wireless application protocol, set of communication standards and language – s. Wi-Fi Wireless fidelity, transmitting over wireless channels – t. ppm Pages per minute, printing speeds – u. dpi Dots per inch, resolution of ink-jet printers – v. NFC Near-field communication, enables communication with other NFC devices –
making backup and recovery difficult, difficult data synchronization, system consistency makes it difficult to change versions of a program, and user training is greater. PROBLEMS: 17. a. ALU – CPU component b. CD-ROM - secondary storage c. keyboard – input equipment d. Modem – data communications e. dot-matrix printer – output equipment f. POS device - input equipment g. MICR reader - input equipment h. laser printer - output equipment i. flash memory – secondary storage j. OCR reader - input equipment k. magnetic (hard) disk – secondary storage l. ATM - data communications m. Primary memory - CPU component 18. a. POS – Point of sale devices, gather and record electronic data b. CPU – Central processing unit, processes tasks within a computer c. OCR – Optical character recognition, optical readers to interpret data d. MICR – Magnetic ink character recognition, magnetically-encoded paper coding e. ATM – Automated teller machine, to communicate to banking customers f. RAM – Random access memory, primary memory, operating instructions g. ALU- Arithmetic-logic unit, performs arithmetic and logic tasks h. MIPS – Millions of instructions per second, computer processing speeds i. OS – Operating system, helps computer run itself and programs within j. MHz – Megahertz, computer processing speeds k. pixel – Picture elements, dots of color in video output l. CD-ROM – Compact disk-read only memory, secondary storage m. worm – Write-once, read-many, type of cd-rom n. modem – modulator-demodulator, transmission over phone lines o. LAN – Local area network, small area connected devices p. WAN – Wide are network, large area connected devices q. RFID – Radio frequency Identification, enables identification using radio waves r. WAP – Wireless application protocol, set of communication standards and language s. Wi-Fi – Wireless fidelity, transmitting over wireless channels t. ppm – Pages per minute, printing speeds u. dpi – Dots per inch, resolution of ink-jet printers v. NFC – Near-field communication, enables communication with other NFC devices
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