| Input Device | no attested term | 输入设备 (shūrù shèbèi) | 입력 장치 (imnyeok jangchi) | A device that sends data into a computer, such as a keyboard, a microphone, a scanner or a sensor. |
| Output Device | no attested term | 输出设备 (shūchū shèbèi) | 출력 장치 (chullyeok jangchi) | A device that brings the results of processing out of a computer, such as a monitor, a printer, a speaker or an actuator. |
| Storage Device | no attested term | 存储设备 (cúnchǔ shèbèi) | 저장 장치 (jeojang jangchi) | A device that keeps data and programs when the power is off: magnetic (hard disk, tape), optical (CD, DVD, Blu-ray) or solid state (SSD, flash drive, memory card). |
| Direct Data Entry | no attested term | — | — | Reading data straight from its source into a computer, without typing it, as barcode readers, OMR, OCR, MICR and RFID readers do. |
| Sensor | no attested term | 传感器 (chuángǎnqì) | 센서 (senseo) | An input device that measures a physical quantity, such as temperature, light, pressure or moisture, and sends the readings to a computer. |
| Actuator | no attested term | 执行器 (zhíxíngqì) | 액추에이터 (aekchueiteo) | An output device, such as a motor, a heater or a buzzer, that a computer switches on or off to make something happen. |
| Optical Mark Recognition (OMR) | no attested term | 光学标记识别 (guāngxué biāojì shíbié) | 광학 마크 인식 (gwanghak makeu insik) | Reading the positions of marks shaded on a pre-printed form, such as a multiple-choice answer sheet. |
| Optical Character Recognition (OCR) | no attested term | 光学字符识别 (guāngxué zìfú shíbié) | 광학 문자 인식 (gwanghak munja insik) | Turning the printed or written characters in a scanned image into text a computer can edit. |
| Magnetic Ink Character Recognition (MICR) | no attested term | 磁墨水字符识别 (cí mòshuǐ zìfú shíbié) | 자기 잉크 문자 인식 (jagi ingkeu munja insik) | Reading characters printed in magnetic ink, as on the bottom of cheques. |
| Radio Frequency Identification (RFID) | no attested term | 射频识别 (shèpín shíbié) | 무선 주파수 식별 (museon jupasu sikbyeol) | Reading the data on a tag by radio waves, from a distance and without a line of sight, as with ear tags and toll tags. |
| Barcode | no attested term | 条形码 (tiáoxíngmǎ) | 바코드 (bakodeu) | A pattern of dark and light bars that stands for a number, read by a barcode reader to identify a product. |
| Solid-State Drive (SSD) | no attested term | 固态硬盘 (gùtài yìngpán) | 솔리드 스테이트 드라이브 (sollideu seuteiteu deuraibeu) | Storage made of flash memory chips, with no moving parts: fast, robust and silent. |
| Hard Disk Drive (HDD) | no attested term | 硬盘驱动器 (yìngpán qūdòngqì) | 하드 디스크 드라이브 (hadeu diseukeu deuraibeu) | Magnetic storage on spinning platters read by moving heads: cheap per gigabyte, with direct access. |
| Optical Storage | no attested term | 光存储 (guāng cúnchǔ) | 광 저장 장치 (gwang jeojang jangchi) | Storage on a disc read by a laser: CD, DVD or Blu-ray. |
| Magnetic Tape | no attested term | 磁带 (cídài) | 자기 테이프 (jagi teipeu) | Magnetic storage on a long tape, read in order from the start (serial access): cheap and huge, so it is used for backups. |
