CSS Computer Science Past Papers 2016–2026: PDF Download

Computer Science is a 200-mark optional subject in CSS, with two papers of 100 marks each. The CSS Computer Science past papers are worth going through because the questions often require more work than the syllabus headings suggest. The papers set by FPSC from 2016 to 2026 are listed below, with both papers included for each year.

Download CSS Computer Science Past Papers

Before you begin serious preparation, download Computer Science past papers and arrange them separately for Paper-I and Paper-II.

CSS COMPUTER SCIENCE 2026 PAST PAPER-1
CSS COMPUTER SCIENCE 2026 PAST PAPER-2

CSS COMPUTER SCIENCE 2025 PAST PAPER-1
CSS COMPUTER SCIENCE 2025 PAST PAPER-2

CSS COMPUTER SCIENCE 2024 PAST PAPER-1
CSS COMPUTER SCIENCE 2024 PAST PAPER-2

CSS COMPUTER SCIENCE 2023 PAST PAPER-1
CSS COMPUTER SCIENCE 2023 PAST PAPER-2

CSS COMPUTER SCIENCE 2022 PAST PAPER-1
CSS COMPUTER SCIENCE 2022 PAST PAPER-2

CSS COMPUTER SCIENCE 2021 PAST PAPER-1
CSS COMPUTER SCIENCE 2021 PAST PAPER-2

CSS COMPUTER SCIENCE 2020 PAST PAPER-1
CSS COMPUTER SCIENCE 2020 PAST PAPER-2

CSS COMPUTER SCIENCE 2019 PAST PAPER-1
CSS COMPUTER SCIENCE 2019 PAST PAPER-2

CSS COMPUTER SCIENCE 2018 PAST PAPER-1
CSS COMPUTER SCIENCE 2018 PAST PAPER-2

CSS COMPUTER SCIENCE 2017 PAST PAPER-1
CSS COMPUTER SCIENCE 2017 PAST PAPER-2

CSS COMPUTER SCIENCE 2016 PAST PAPER-1
CSS COMPUTER SCIENCE 2016 PAST PAPER-2

Computer Science CSS Past Paper Trends

Regular expressions and automata have appeared several times lately. The 2024 paper asked for regular expressions covering dates, URLs, IP addresses, and email addresses. In 2025, there was a DFA question involving strings starting with “baa”, and another DFA problem appeared in 2026. Algorithms have also received attention. Recursive binary search was asked in 2024, quicksort in 2025, and postfix evaluation using a stack in 2026. These questions are a reminder that knowing what an algorithm does is not quite the same as being able to work through it on paper.