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What are the two types of architecture in computers?? von Neumann Havard Which computer architecture in the most common?? von Neumann architecture. What is the von Neumann architecture? Where instructions and data are stored in a common main memory and transferred using a single shared bus. What is the Havard architecture?? Where instructions and data are stored in two seperate memories and each has a bus. What is the main issue with von Neumann architecture?

What data does Pearson’s large data set contain?? Information from weather stations. When did the weather stations in Pearson’s large data set record data?? May-Oct 1987 May-Oct 2015 Why was Oct 1987 of interest?? Because of The Great Storm. What are the units for mean temperature?? ^{\circ} C What are the units for total rainfall?? $mm$ What does tr/trace mean in relation to total rainfall?? Less than 0.05mm rain. What are the units for total sunshine?

What is qualatitive data?? Non-numerical values. What is categorical dtaa?? Non-numerical values. What’s an example of qualititive data?? Colour. What is quantitive data?? Numerical values. What is discrete data?? Data that can only have specific, numerical values. What’s an example of discrete data?? Shoe size Number of children What is continious data?? Data that can take any decimal value within a specified range. What is continious qualititive data?? That doesn’t exist. In $20 \leq w < 70$, what does $20$ represent?

What is a computer system?? Any device that can take a set of inputs and process them into useful outputs. What are the three key stages in a computer system?? $$ \text{input} \to \text{process} \to \text{output} $$ What are the 4 main components of a motherboard?? CPU Main memory Address, control and data buses I/O controllers How do components of a motherboard communicate with one another?? Using a bus. What are the three types of bus?

What is the crucial idea that allows you to solve systems of equations using matricies?? If $$ A\left( \begin{matrix} x \\ y \ z\end{matrix} \right) = v $$ then $$ \left( \begin{matrix} x \\ y \ z\end{matrix} \right) = A^{-1}v $$ How could you rewrite [2x+3y = 4 \\ 4x-y = 7] as the product of two matricies?? $$ \left(\begin{matrix}2 & 3 \\ 4 & -1\end{matrix}\right)\left(\begin{matrix}x \ y\end{matrix}\right) = \left(\begin{matrix}4 \ 7\end{matrix}\right) $$ How could you solve this $$\left(\begin{matrix}2 & 3 \\ 4 & -1\end{matrix}\right)\left(\begin{matrix}x \ y\end{matrix}\right) = \left(\begin{matrix}4 \ 7\end{matrix}\right)$$?

What is the math definition of the inverse matrix of $M$?? The inverse matrix of $M$ is the matrix $M^{-1}$ such that $MM^{-1} = M^{-1}M = I$. What’s the wordy definition for an inverse matrix of $M$?? The matrix that when multiplied by the original matrix yields the identity matrix. What’s the formula for the inverse of matrix $$M = \left( \begin{matrix}a & b \\ c & d\end{matrix} \right)$$?? $$ \frac{1}{\text{ad - bc} M} \left( \begin{matrix}d & -b \\ -c & a\end{matrix} \right) $$

What is the determinant of a matrix?? A special value associated with a matrix. What does $|M|$ mean in the context of matricies?? The determinant of the matrix $M$. What does $\text{det} M$ mean?? The determinant of matrix $M$. What’s the formula for the determinant of a $2x2$ matrix?? $$ ad - bc $$ What is $M$ if $\text{det} M$ is $0$?? $M$ is a singular matrix. What is $M$ if $\text{det} M$ is not $0$?

What does INP mean in LMC?? Input. What does the INP instruction do in LMC?? Allow the user to input data. Where is the input from INP stored in LMC?? In the accumulator. What does STA mean in LMC?? Store address. What is the instruction register for instruction 901 in LMC?? 9. What is the address register for instruction 901 in LMC?? 01. What does STA do in LMC?? Store the value in the accumulator at the given address.

See also: [[Further Maths - Determinants]]S [[Further Maths - Inverting Matricies]]S [[Further Maths - Solving Systems of Equations Using Matricies]]S [[Further Maths - Linear Transformations]]S If a matrix is $m \times n$, how many columns does it have?? $m$ columns. If a matrix is $m \times n$, how many rows does it have?? $n$ rows. What are the dimensions of a matrix?? $$ \text{rows} \times \text{columns} $$

See Also [[Maths - Proof by Contradiction]]S Flashcards When proving irrationality of a surd $x$, what is the setup?? Assume $x = \frac{a}{b}$ where $a$ and $b$ are integers that do not share any factors. Why can’t $a$ and $b$ share any factors when proving the irrationality of a surd?? Because it would mean you could simplify $\frac{a}{b}$. How do you get rid the square root over $x$ when proving it’s irrationality?

What are integers?? All numbers without a fractional component. What are numbers without a fractional component called?? Integers. What are rational numbers?? Numbers that can be written in the form $\frac{a}{b}$. What are numbers that can be written as $\frac{a}{b}$ called??' Rational numbers. What are irrational numbers?? Non-recurring decimals. What are non-recurring decimals called?? Irrational numbers. What are real numbers?? Rational and irrational numbers. What the term for rational and irrational numbers?? Real numbers. Backlinks [[Maths - Syllabus]]S Metadata date: 2020-09-23 17:28 tags: - '@?

Physics Syllabus Link to specification: https://www.ocr.org.uk/Images/171726-specification-accredited-a-level-gce-physics-a-h556.pdf Exams: [[Physics - Exams]]?? AS-Level [[Physics - Units and Prefixes]]S [[Physics - Vectors and Scalars]]S [[Physics - Distance and Velocity Time Graphs]]?? [[Physics - Vernier Callipers and Micrometers]]S [[Physics - Uncertainty]]S [[Physics - Galileo's Slope Experiment]]S [[Physics - Combining Vectors]]S [[Physics - Resolving Vectors]]S [[Physics - Syllabus]]S [[Physics - SUVAT Equations]]S [[Physics - Force and Newtons]]S [[Physics - Stopping Distances]]S [[Physics - Free Fall]]S [[Physics - Moments]]S [[Physics - Calculating Acceleration Due To Gravity]]S [[Physics - Equilibrium]]S [[Physics - Projectiles]]S [[Physics - Density]]S [[Physics - Pressure]]S [[Physics - Archimedes' Principle]]S [[Physics - Hooke's Law]]S [[Physics - Work Done]]S [[Physics - Energy]]S [[Physics - Power]]S [[Physics - Elastic Potential Energy]]S [[Physics - Momentum]]S [[Physics - Charge and Current]]S [[Physics - Circuits]]S [[Physics - Electron Drift Velocity]]S [[Physics - Collisions in 2D]]S [[Physics - Voltage and Potential Difference]]S [[Physics - Resistance and Ohm's Law]]S [[Physics - Resistivity]]S [[Physics - Waves]]S [[Physics - Thermistors and LDRs]]S [[Physics - Oscilliscopes]]S [[Physics - Reflection and Refraction]]S [[Physics - Diffraction]]S [[Physics - Polarisation]]S [[Physics - Intensity]]S [[Physics - Electromagnetic Waves]]S [[Physics - Young's Modulus]]S [[Physics - Internal Resistance]]S [[Physics - Potential Dividers]]S [[Physics - Quantum Physics]]S [[Physics - Electromagnetic Radiation]]S [[Physics - The Photoelectric Effect]]S [[Physics - Superposition]]S [[Physics - Wave-Particle Duality]]S [[Physics - Standing Waves]]S Recall Questions for AS-Level [[Physics - Recall for Chapter 3: Motion]]S [[Physics - Recall for Chapter 4: Forces in Action]]S [[Phyiscs - Recall for Chapter 5: Work, Energy and Power]]S [[Physics - Recall for Chapter 6: Materials]]S [[Physics - Recall for Chapter 7: Laws of Motion and Momentum]]S [[Physics - Recall for Chapter 8: Current and Charge]]S [[Phyiscs - Recall for Chapter 9: Energy, Power and Resistance]]S [[Physics - Recall for Chapter 10: Electrical Circuits]]S [[Physics - Recall for Chapter 11: Waves I]]S [[Physics - Recall for Chapter 12: Waves II]]S [[Physics - Recall for Chapter 13: Quantum Physics]]S A-Level [[Physics - Spectra]]S [[Physics - Circular Motion]]S [[Physics - Thermal Physics]]S [[Physics - Oscillations]]S [[Physics - Moles]]S [[Physics - Ideal Gases]]S [[Physics - Gravitational Fields]]S [[Physics - Kepler's Laws]]S [[Physics - Satellites]]S [[Physics - Gravitational Potential]]S [[Physics - Stellar Evolution]]S [[Physics - Objects in the Universe]]S [[Physics - The Nuclear Atom]]S [[Physics - Hertzsprung-Russell Diagrams]]S [[Physics - Black-Body Curves]]S [[Physics - Standard Model]]S [[Physics - Beta Decay]]S [[Physics - Cosmology]]S [[Physics - Radioactivity]]S [[Physics - Misc]]S Spec Module 1: Development of Practical Skills in Physics (Y12 & Y13) Practical skills assessed in a written exam Practical skills assessed in the practical endorsement Module 2: Foundations in Physics (Y12 & Y13) Physical quantities and units Making measurements and analysing data Nature of quantities Module 3: Forces and Motion (Y12) Motion Forces in action Work, energy and power Materials Newton’s laws of motion and momentum Module 4: Electrons, Waves and Photons (Y12) Charge and current Energy, power and resistance Electrical circuits Waves Quantum physics Module 5: Newtonian World and Astrophysics (Y13) Thermal physics Circular motion Oscillations Gravitational fields Astrophysics and cosmology Module 6: Particles and Medical Physics (Y13) Capacitors Electric fields Electromagnetism Nuclear and particle physics Medical imaging Info This page was last updated 2022-02-21.