Basic Concepts of Computing & Information - Lecture 1

Comprehensive practice flashcards covering basic concepts of computing, system operations, CPU components, memory types, peripheral devices, and computer classifications from DRM1201 Lecture 1.

What is the definition of a computer according to the lecture?

A programmable, multiuse machine that accepts input data (raw facts and figures) and instructions, and processes or manipulates it into useful results/information that we can use.

How are hardware and software defined and distinguished from one another?

Hardware consists of the physical or tangible parts of a computer. Software consists of computer programs that run on computer hardware, divided into System Software and Application Software.

What four primary benefits of a computer are outlined in the lecture?

1. High speed (can perform millions of operations in a second)
2. High accuracy (output accuracy is virtually guaranteed when programmed and input correctly)
3. Large storage capacities (stores huge amounts of data in small physical spaces with fast, convenient access)
4. Ability to perform large volumes of tasks tirelessly without fatigue-induced errors.

What is telemedicine, as highlighted in the health applications of computers?

Medical care delivered via telecommunications that allows doctors to treat patients from far away.

What are the four basic operations performed by all computers, plus the fifth additional operation?

Input, Processing, Storage, and Output, plus Communications (sending and receiving data).

What is the primary operational distinction between primary storage and secondary storage?

Primary storage (memory) is temporary storage holding data waiting to be processed, whereas secondary storage is permanent storage on media such as hard disks, DVDs, and CDs.

Which computer components are located inside the system cabinet?

Processor, memory, hard-disk drive, video card, sound card, and modem.

What three main functional components comprise the Central Processing Unit (CPU) architecture?

1. Arithmetic Logic Unit (ALU)
2. Control Unit (CU)
3. Main (working) Memory

What is the function of the Arithmetic Logic Unit (ALU)?

It executes all calculations, carrying out all arithmetic and logical operations.

What is the role of the Control Unit (CU) within the CPU?

It carries out instructions stored in the CPU, controls the order in which instructions are executed, and coordinates all hardware operations.

How do Read Only Memory (ROM) and Random Access Memory (RAM) differ in terms of volatility and modifiability?

ROM holds data that can be read but not modified, typically contains manufacturer's instructions, and is non-volatile. RAM temporarily holds data the CPU is currently processing and is volatile.

What analogies are used to explain the operational difference between RAM and secondary memory?

RAM is compared to a 'Workbench' (temporarily holding data currently being processed), while secondary memory is compared to a 'Cabinet' (permanently storing data not currently being processed).

What are the main characteristics of secondary memory (mass storage)?

It is permanent, persistent storage that retains data when power is switched off, holds data not currently being processed, is relatively low speed, and is relatively cheaper than main memory.

What is a peripheral device?

An external device connected to the computer (system unit) to provide input and output capabilities.

Which devices are listed as functioning as both input and output devices?

External hard drives, digital camcorders, and touch screens.

What four criteria are used to categorize and classify different types of computers?

Speed, Processing Capabilities, Price, and Size.

What are the five basic size categories of computers?

1. Supercomputers
2. Mainframes
3. Workstations
4. Microcomputers/Personal Computers
5. Microcontrollers

What are the key specifications, price range, and a notable example of a supercomputer?

Priced from $1\text{ million}$ to over $350\text{ million}$, they have thousands of processors performing more than several quadrillion calculations per second; Titan (U.S.A.) is cited as the largest supercomputer.

What are the operational capabilities, price range, and common uses of mainframe computers?

Priced from $5{,}000$ to $5\text{ million}$, they support hundreds of users simultaneously, process billions of instructions per second, and are used by large organizations (banks, airlines, colleges) for critical transactions, registrations, and records.

What is a workstation, and what typical tasks is it designed to perform?

An expensive, powerful personal computer connected to a network, designed for scientific, mathematical, engineering, CAD, CAM, car design, drug development, and movie special effects.

What is the typical price range of microcomputers, and what forms do they take?

Costing from $500$ to over $5{,}000$, they include desktop, tower, notebooks (laptops), netbooks, tablets, mobile devices, personal digital assistants (PDAs), and e-readers.

What are microcontrollers (embedded computers), and where are they used?

Tiny, specialized microprocessors installed inside appliances and automobiles, such as microwaves, programmable ovens, blood-pressure monitors, air bag sensors, vibration sensors, MP3 players, digital cameras, and car systems.

What is a server, and what defines a client-server network?

A server is a central computer that holds collections of data (databases) and programs to provide services to client devices (PCs, workstations); these clients are linked together by a wired or wireless network to form a client-server network.

What conceptual computing process is illustrated in this diagram?

The basic information processing cycle (IPOS model), demonstrating the flow from Input to Processing and Output, with bidirectional data exchange between Processing and Storage.

What specific hardware storage component is depicted here, and into which memory category does it fall?

A Random Access Memory (RAM) module, which belongs to primary storage (main memory).

What secondary storage medium is depicted in this image, and what is its common application?

Magnetic tape, which is commonly used for backup storage.