Sadharan Bima Corporation — Programmer/ AP/AME — Written Exam: 2020 (DU)প্রশ্ন ও সমাধান

Liveware refers to the human element of a computer system — the people who operate, program, maintain, and make decisions using the system — as distinct from hardware (physical components) and software (programs/instructions).

Why the term matters: A computer system is often modeled as three interacting components:

graph LR
  HW[Hardware] <--> SW[Software]
  SW <--> LW[Liveware - Humans]
  LW <--> HW

• Hardware: physical machine (CPU, memory, peripherals).
• Software: the programs/instructions that make hardware perform tasks.
• Liveware: the users, operators, and programmers whose skills, decisions, and inputs actually drive the whole system — without a human to define requirements, write code, or interpret output, hardware and software alone accomplish nothing.

Example: In a bank's IT system, the servers are hardware, the banking application is software, and the IT staff, tellers, and customers using it are the liveware.

Exam takeaway: Liveware is the human component of a computer system; it is often cited to emphasize that people (skills, training, decision-making) are just as critical to system success as the technology itself.

PDF stands for Portable Document Format.

Key facts:

• Developed by Adobe (introduced 1993) to allow documents — text, fonts, vector graphics, and images — to be viewed and printed identically regardless of the software, hardware, or operating system used to view them ("portable").
• It became an open, ISO-standardized format (ISO 32000) in 2008, meaning any vendor can implement a compliant PDF reader/writer, not just Adobe.
• Common features: embedded fonts, digital signatures, interactive/fillable form fields, encryption/password protection, and compression.

Exam takeaway: PDF stands for Portable Document Format — its core design goal is presentation fidelity across platforms, which is why it is the standard format for official documents, forms, and printable reports.