topic 1 Flashcards
(29 cards)
what is a digital device?
an electronic device that uses binary values in its design and function
what are the features and functions of a contemporary/digital device?
a. portability
b. performance
c. storage
d. user interface
e. connectivity (cable types (USB, HDMI))
f. media support
g. energy consumption
h. expansion capability
i. security features.
what is portability, features and examples
Refers to how easy it is to carry or move a device.
Features: Lightweight design, compact size, battery-powered.
Examples: Laptops, smartphones, tablets, portable hard drives.
what are some security features?
Protects data and device integrity.
Features: Password protection, fingerprint scanners, facial recognition, encryption, firewalls.
Examples: iPhones with Face ID, biometric authentication in banking apps, antivirus software.
storage devices?
magnetic storage, solid state and optical hard drives,
magnetic tape drives, removable solid state (SSID) cards, network-attached
storage (NAS), RAID storage
technological convergance in the context of digital devices?
technological convergence refers to the merging of different technologies into a single device or system, allowing users to perform multiple functions that previously required separate devices
impact of technological convergance?
✅ Convenience – Reduces the need for multiple devices.
✅ Cost Efficiency – Buying one multi-functional device is cheaper than buying several.
✅ Increased Connectivity – Devices work seamlessly together (e.g., smartphones linking with smartwatches).
✅ Faster Innovation – Encourages companies to develop all-in-one solutions.
❌ Security Risks – More connected devices mean higher vulnerability to cyber threats.
❌ Shorter Lifespan – Devices become outdated faster due to rapid technological advancements.
what is an embedded system
a specialized computing system designed to perform a specific task
features of embedded system
they are designed for a single purpose
low power consumption
reliable and stable
minimal user interface
what is firmware?
it is a software programmed on hardware devices to control their functions
what is non volatile memory and how is it related to firmware?
non volatile is a type of memory that can retain data even after the power is shut off. firmware is stored on non volatile memory like flash memory, rom, eeprom
why do we need firmware?
✅ Controls Hardware Operations – Ensures the device functions correctly by managing its components.
✅ Optimizes Performance
✅ Enables Updates & Bug
✅ Ensures Stability – Unlike regular software, firmware remains unchanged unless updated, providing consistent performance.
✅ Helps hardware components interact with each other and with software.
how can SPEED assess the performance of a device?
The speed of a digital device determines how quickly it processes data and executes tasks.
how does CAPACITY assess the performance of a device?
Capacity refers to the amount of data a device can store and process.
ex; storage capacity, ram capacity (how many programs can run at once)
how does BANDWIDTH assess the performance of a device?
bandwidth is the data transfer rate of a device. the amount of data that can be sent over a network in a given time.
how to calculate the time needed to transmit a file?
time =size of file / network speed
what is systems software?
it is designed to manage and operate system resources
what is application software?
it is designed to accomplish tasks for specific purposes
the role of operating system in managing DEVICES
The OS enables communication between the system’s software and the hardware components.
Coordinates data flow between CPU and devices
Handles errors or disconnections
the role of os in managing PROCESSES
ensures that programs run efficiently.
Schedules tasks for the CPU
Handles multitasking by switching between processes
Manages process priorities and memory use
the role of os in managing USERS
manages user accounts, permissions, and the user interfaces
role of os in managing SECURITY
secures the system via authentication, encryption, access control, and monitoring.
how does gps work
the receiver in your phone is constantly looking out for signals sent out by satellites. once the receiver calculates its distance from a few satellites, it will find ur exact location
what is miniaturization
the process of making smth very small using technology
